Chapter 22 2. The gymnasium murder

"In this incident, there are roughly four conditions for determining the prisoner." Liran held up all four fingers of his right hand except the thumb. "Who is the prisoner? As for the faculty and staff, except Mr. Masumura, they all have alibi, and the students were very confused in the time zone just after school. However, there is no evidence that the prisoner must be someone in the school. Therefore, there is suspicion. There are too many people, let me narrow down the scope first." He turned around and wrote on the blackboard. - "First condition". The position of the text is very high, and it seems that it will use up all the blackboard space with reasoning.It was the first time for You Nai to see Li Ran's characters, and the brushwork was very beautiful.Although it is very likely that I wrote carefully on such a scene.

Putting down the chalk, he immediately began to explain the "first condition". "The initial cause was in the items that Asahishima carried with him. On the day of the incident, I saw the remnants of the scene that were kept in the college entrance and employment guidance room. There were few things in the backstage of the scene, and most of them belonged to the victim. .There are still some people present who don’t know, brother, can you please introduce me.” Hakamada, who was pointed out, hesitated for a moment, then honestly opened the manual and read out the list of leftovers.Yuno thought about meaningless things again in her heart. Would everyone regard Liran and elder brother as brothers because of the title just now?

"Let's see, the items that Asashima carries with him, first of all, facial tissues, are placed in the left pocket of his trousers. The key of the broadcasting room, wallet and mobile phone are in the right pocket, the student handbook is in the breast pocket of the white shirt, and the DVD is the butt Pockets. In addition, there are other remnants of the scene, the black umbrella in the men's room, the ribbon in the right backstage. . . . and that's it." "Thank you. There is something wonderful about Asashima's belongings. It is the balance between the left and right pockets of the trousers. There are only tissues on the left, but the wallet, mobile phone, and key chain are on the right. Even if the right side is handy, this is the case. It's so abnormal."

"Ah, indeed..." Yukino had already heard this reasoning in the career guidance room, and the elder brother, Shirato and others who had never heard of it seemed to be pointed out their blind spots. "But it's not too strange..." someone among the students said.Shiina is a serious boy from the student council. "Maybe someone prefers to have only one pocket and put everything in there." "Indeed, Mafuyu-san is very smart." "My name is Ryotaro. Mafuyu is a female name..." "Oh, indeed. Anyway, you are very smart. As you said, this clue cannot be asserted as suspicious. What you put in your pocket varies from person to person. Asashima may be a strange person. But let's assume that the usual Asahi Shima doesn't pack too many things in his pockets, but he is in a special situation that is different from usual when he is killed.

"Referring to Asahima's usual serious personality, this assumption has certain consideration value. I have reasoned about this situation." Li Ran seemed to be pursuing the process of thinking, leaving the desk and pacing back and forth in front of the blackboard. "One small item on the left, and three on the right. If you just move the right one to the right, the two pockets are pretty even. But only the right pocket is really full. Why?  … …the first possibility that came to mind was that the prisoner had moved the object. "It may be that there were originally two small items in each of the two pockets. But after killing Asashima, the prisoner took out a small item from the left pocket for some reason and put it back in the right pocket. As a result It creates an imbalance."

"Why did you do that?" Tsubaki Matsue from the drama department tilted his head. "Why did you do this? Of course, that item is useful to the prisoner. After killing someone, you must use one of the wallet, mobile phone, and key chain. Since there is no shortage of money, it should not be the wallet. I want to delete the call history on the mobile phone. Is it? But the telecommunications company still has records, and it will be exposed as soon as the police do a little investigation. So I think the most likely thing is the keychain. "That's the key to the broadcasting room. And there is a broadcasting room in the backstage of the old gymnasium that was the scene of the murder. The prisoner used the key he snatched from Asashima to enter the broadcasting room... Could it be?"

Speaking of this, Yuzuno finally understood. It was for this reason that Liran suddenly went to the broadcasting room two days ago. "The above are all your guesses, just listing the possibilities that come to your mind." Li Ran replied "yes". "My reasoning just now is still stuck in the realm of assumptions, and it is hard to say that it is a fact. ... But." "what?" "Please listen to me and make some guesses. Let me think about where I am talking. By the way, the prisoner used the key to enter the broadcasting room. I don't know what the prisoner did in the broadcasting room, so I went to the broadcasting room to have a look."

"Ah, at that time you asked me..." Kajihara, head of the drama department, said. "Yes. Kajihara had a perfect alibi and was familiar with the broadcasting room, so I asked him for help. He told me a very interesting thing at that time." "Huh? What did I say?" "You inadvertently said, 'You can watch videos in the broadcasting room of the old gymnasium'." Kajihara did say so. After being called in the waiting classroom, he said, "I have seen the performance records of the seniors", and Riran also confirmed to him, "Can I watch the video in the broadcasting room?".

"Video. I immediately thought there was a DVD among Asashima's belongings. Could there be some secret in that DVD? I had this idea, so I borrowed the key chain and DVD with my brother's permission and went to the broadcasting room of the old gymnasium. .” "Wait a minute, I don't remember giving you permission." "It's just that you forgot." "No, I really didn't allow..." "Let me continue." Li Ran ignored his brother's rebuttal.Although he was wearing a formal suit and his language was very polite, this point still remained the same.

"I have emphasized several times that the previous reasoning is my guess. The prisoner took the key from Asashima's belongings and entered the broadcasting room. There is no conclusive evidence for this reasoning. But based on what I said earlier, this assumption— - At least the inmate searched the victim's belongings - very likely. "The reason is that Chaojima's corpse has been moved. It was moved from the inside of the backstage side curtain to the center of the stage. This behavior of the prisoner can be explained in this way: The prisoner wanted to find the items on Chaojima, so he moved the body from the dark backstage to the center of the stage. There is a place for lighting. Also, the reason for putting the key chain taken out of the left pocket back into the right pocket is also very simple, because the left half of the body is covered with blood.

"When the prisoner took out the key chain from the left pocket, the blood had not yet flowed to the lower body. But the body was placed on the podium with its back against it, and after a while, the blood flowed all over the left half of the body and stained the pocket. The tissue paper found was covered with blood .If one's own hands were stained with blood, there might be evidence left behind. In order to avoid this situation, the prisoner had no choice but to put the key back into the right pocket which was not stained with blood." "Oh", Shirato sighed in admiration. "At the same time, it also means that there was a period of time between when the prisoner took the item and returned it. It only took a few minutes to operate the mobile phone, so the keychain was taken, and the possibility that the prisoner did something on the broadcast very high." Through the lengthy explanation, Li Ran's guess became more and more true.But Xiantang did not back down. "It's just a possibility, and then I made up the truth." "indeed so." "...If you understand, why do you still say it?" "Because the results of my investigation in the broadcasting room proved that what was said above is true." The performance that makes the audience anxious and anxious is very good.The students shouted again, and Xiantang's lips couldn't help twisting. "Can you prove it's true?" "Yes. My guess was correct. The prisoner took Asashima's key and entered the broadcasting room, where he watched a DVD." "How could a prisoner do such a thing... What are you doing?" "How do I know, you ask? I'll explain in a moment." Li Ran stopped pacing and returned to the podium, smiling at the audience. "There are TVs, DVD players and video recorders in the broadcasting room." Li Ran said plainly. Yukino also went to the broadcasting room in person, and it is completely impossible to imagine that the investigation at that time can confirm the above reasoning.The survey that only watched the school introduction DVD?how is this possible. "The broadcasting room in the teaching building changed the TV, so I took the old TV to the old gymnasium. I wanted to watch a DVD, so I connected the main power of the player. But..." "Not activated?" Kajihara seemed to recall. "Yes. It didn't start. It's a VCR plug in the outlet. Right, Hakamata-san?" "Yes." Yuzuno replied. "Because the DVD player wasn't plugged in, so I plugged it in." But he didn't thank him, Yunon complained in his heart. "Hakamada-san plugged in the plug and turned on the power. But this time the play button didn't work. According to Kajihara, the button was broken because I pressed it too hard before. So I had no choice but to use the remote control. I was looking for It took me a long time to find the remote control, because it was placed in a box of Japanese sweets. The radio room of the old gymnasium was different from the new gymnasium. It was very messy, so all the remote controls of the equipment were stored there. I pressed play key. The DVD video starts playing immediately. "Have you noticed, it will start playing soon." "What's wrong?" Kajihara, who was there at the time, seemed a little confused. "It was important. But I didn't notice it at the time until the video was over. "The DVD is a VTR introduced by the school. It is very well done, but I can't think of any special connection with the incident, and I don't know whether the prisoner has watched this DVD. I thought that the prisoner might leave other traces, so Investigated everywhere....It turned out to be in vain. "However, Kajiwara spoke to me who was distressed. The videotape I watched yesterday was still in the VCR, and he wanted to take it out. Of course, I had no reason to refuse, so I agreed. He went to the VCR and picked up the remote control I left there. , operated a bit. So, the video recorder started!" Riran opened his hands to show the shock he received at that time, but the audience didn't seem to feel the same. "What are you talking about?" Xiantang asked. "Don't you understand, Mr. Criminal Police? The remote controller is common for VCRs and DVDs! Kajihara told me that you can switch modes with a switch to choose whether to control the VCR or the DVD player." "What's the matter? This kind of remote control is very common..." "Mr. Criminal Police, no, everyone, please think about it too. The day before the incident, Kajiyuan and others saw the performance record very late. Because the time to close the school was imminent, they left in a hurry, so panicked that they forgot to take out the The extent of the tape." Everyone in the drama department looked at each other and nodded, as if they haven't found any problems. "So it came to the day of the incident. No one used the radio room in the gymnasium during school hours. The socket was still plugged into the VCR. The video tape stayed in the VCR. Everything was the same as the day before. But—I When you press the button on the remote control, the DVD starts playing in no time! "That is to say, the remote control was set to DVD mode before I pressed it!" "What's the matter..." In the middle of Xiantang's complaints, he realized a terrible fact.His face, which was flushed with anger, turned pale. Yukino noticed it too.The same goes for my brother and Kajihara. "When Kajiwara handed me the remote control, he didn't touch the button. The Kajita brothers and sisters and I who were present can confirm it with certainty. "Reorganize your thoughts. The drama department watched the video the day before, and went back very anxiously. According to Kajihara's own words, the switch of the video recorder also failed, so when he took the video tape, although he was near the video recorder, he still used the remote control device. Isn’t that right, Kajihara?” "Ah, um... the VCR has many buttons that don't work except the play button. So I'm used to using the remote control..." "So, when you watched the video the day before, you also used the remote control to operate it?" "Yes, of course." "The theater department used the remote control to watch the video. That is to say, the remote control was set to VCR mode. Then they left in a panic. The video tape was still in the VCR and the plug was not pulled out. Think about it, everyone. It is impossible for members of the theater department who put away the remote control to switch the remote control mode on purpose." The student council president exclaimed.Other students who did not know the investigation process in the radio room also clearly realized the importance of this issue. "However, when I picked up the remote, it was set to DVD mode! That's weird. Can only assume someone had used a DVD player before me. The DVD eject key is good, so use the remote The player must have been used to play it. On the day of the incident, the man was watching a DVD in the broadcast room!" Li Ran leaned over the desk as if accusing. "Who could that person be? Asashima is the only one who carries the key to the broadcasting room of the gymnasium. That is to say, he is the only one who can enter and leave the room unobtrusively. Asashima entered the backstage at 3:30 and went to the broadcasting station before being killed." Room, watched DVD. There is a possibility. "But there is a problem. The socket is plugged with a VCR plug. The person who watched the DVD replaced the DVD player plug and then switched it back to the VCR. This move was obviously done to hide. Someone wanted to eliminate himself. Thinking about it this way, that person is not like Asashima, who was seen entering the backstage majestically, but more likely the prisoner who killed him. "The above reasoning proves that the prisoner took the key from the dead Asashima and watched the DVD in the broadcasting room." Li Ran paused for a moment, opened the bottle and took a sip of water. Everyone was stunned.Kajihara Sora opened his mouth, and Sendo also stood there stiffly, unable to refute. "...the remote control did not switch back to the original mode. This very detailed problem is the prisoner's only mistake." After the lips were removed from the mouth of the bottle, Li Ran continued to explain. "If there was no mistake, my reasoning would hit a wall. But on the other hand, this fact is an important factor in determining the prisoner. So let's continue to reason. "The prisoner stayed at the scene after the murder and watched the DVD. What video did he watch? Why didn't he go somewhere else, but had to watch it at the scene of the murder? I made another assumption. "First, let's say that DVD was in Asashima's hands. So the prisoner didn't read the contents before killing him and taking the DVD. "In addition, the prisoner is forced to confirm the content immediately. They cannot take it and escape and play it in a safe place, but must confirm it on the spot. ... Why is this? "The answer is simple. When Asashima was killed, he carried two DVDs with him. The school introduction DVD to be used in club activities and the DVD that is very important to prisoners. Probably neither of these two DVDs recorded title." Yuzuno remembered.There are indeed no titles on the discs and DVD cases introduced by the school. "Prisoners can't tell which one is the one they want. Although they can take both of them, the other one is likely to be related to the broadcasting department. If it disappears, others will find it immediately. In this way, the investigation The focus will be on aspects related to images, and maybe I will be corrected. "After thinking about this, the prisoner decided to risk his life and confirm the contents of the disc on the spot. He sacrificed a few minutes to enter the broadcasting room on the second floor, played the DVD, and took only the one he wanted, and the other introduced the school. Put the DVD back in Asashima's pocket." "So that's how it is..." Hakamada sighed, but still shook her head unconvinced. "However, this hypothesis is still only a logical possibility. Although it was finally confirmed by subsequent investigations, let it be ignored for now. On the other hand, the prisoner watched the video in the broadcasting room. From this fact, it can be inferred that the prisoner's What are the characteristics? The first condition is here." "Ah, that's right." Yukino changed her mind. Riran's reasoning was centered on identifying the prisoner.Guessing what actions the prisoner took is not the end goal. "The main point here is that there was no TV in the original broadcasting room in the old gymnasium. As I mentioned just now, about two months ago, the old TV in the teaching building moved to the old gymnasium. Before that, there was no TV in the broadcasting room. Can't see video. "But the prisoner naturally went to the broadcasting room, where a DVD was played. He—or she—knows that videos can be watched in the broadcasting room. From this, it can be judged that the prisoner is very familiar with the situation in the broadcasting room. More precisely, the people who regularly use the old gymnasium broadcast room." Most of the qualified students in the audience became nervous at the same time. "The radio room in the old gymnasium is often used. This condition can greatly limit the range of suspects. If the TV was only moved in two months ago, the graduates should not know about it. There is no doubt that this is the work of the students. In other words, the Drama Department, Student Union, and Broadcasting Department gathered here..." "Please wait a moment." The person who raised his hand was Sugamo, a somewhat gloomy first-year student from the Broadcasting Department. "I don't think we should be suspected just because we know we can watch videos. It's not a secret that there is a TV in the broadcasting room. Maybe we chatted with others by chance, so we talked about it. I complained to several friends, It was especially hard when moving the TV set." "That's it." Sugamo's analysis was reasonable, but Riran still had more than enough time to swim. "So, did you tell that friend where the remote is?" "Ugh?" "The remote control. Come to think of it, it's in the empty box labeled Sakura Yokan." "...No, I haven't said such a thing..." "Do you understand?" Risen turned his gaze from Sugamo to everyone, "This is the second point. The empty box of Sakura Yokan. The remote control is kept in it. When the drama department hurried back, Didn't forget to put the remote back in the box either. If it wasn't in the right place, Kajiwara would have noticed. So obviously, for someone who used the old gym broadcast room a lot, that's where the habit is. "However, for those who go to the broadcasting room for the first time, it is difficult to find the remote control in there. Even people who often go to the broadcasting room of the new gymnasium don't know it. Put the remote control in the Japanese sweets In the box, there are rules that only exist in the messy old gymnasium. All the famous detectives must not be able to deduce that the remote control that should normally be placed in a conspicuous place is placed in such a box. If it is in that It may take a long time to search in a messy room." "Indeed, this is indeed somewhat unexpected." Hakamada thought about what happened in the broadcasting room, and at the same time agreed.This time Riran nodded vigorously. "Right? As I've said many times, you have to use the remote to play DVDs. "Assume that the prisoner is not a person who frequents the broadcasting room, but an ordinary student. He has learned by some chance that there are TVs and players in the broadcasting room, or he knows nothing about it, but thinks that the broadcasting There will be TVs and other equipment, so he went to the broadcasting room. After entering, he found that there was indeed a TV and a DVD player. But the buttons did not work, and he wanted to use the remote control, but he couldn’t find it. Because he still At the scene of a crime, every second is precious. If you are in your right mind, you will definitely give up and take both DVDs. "However, the real situation is that the prisoner took out the remote control from the empty box marked with yokan, and used it. Switched the mode to DVD. There was no trace of the prisoner's search in the room. Even if ordinary students know that there is a TV in the broadcasting room, They also don’t know the location of the remote controller. In this way, the prisoners we’re looking for are still limited to students who are familiar with the rules of the radio room in the old gymnasium.” He stopped here again.Sugamo has been silent and did not continue to refute. Satoran faced the blackboard and wrote the conclusion of his reasoning next to the "first condition". ——"College students often use the broadcasting room of the old gymnasium" Yuno read word by word, feeling a chill down her back. The reasoning just now answered several questions.Usato only investigated the alibi of the students who used the broadcasting room, asked Sendo to pay attention to Asashima's DVD, asked Kajiwara in the broadcasting room of the gymnasium, and asked questions of the broadcasting department members in the teaching building.Li Ran's actions are based on the above reasoning. How did that happen.At that time, Yuzuno felt that the investigation just by watching the video was meaningless, but the boy deduced so many clues from it.When his brother asked him, "Did you find anything?", Li Ran had already limited the suspects to more than a dozen people in his mind, figured out the criminal's actions after committing a crime, and even understood that the motive was related to the image, and the movement The grounds of the corpse.Starting from the very detailed fact of the mode setting of the remote control—— Li Ran endured the fearful gaze from the audience, and continued to reason in a flat tone. "The first condition has finally been obtained. Based on this, the suspects have been reduced to more than ten people at once. Let's continue to deduce the second condition." "Both the second condition and the third condition are mainly related to the alibi. Chaojima was killed between 3:30 and 3:15, but the specific time of the murder and the time when the prisoner fled the scene I don't know for the time being. I will determine the specific time." "……How to do?" Shiga from the drama department urged him to continue with questions. "Essentially the same as reasoning about the first condition, looking at something left over." "A remnant?" "It's an umbrella." "An umbrella again..." Because of Minister Sagawa's incident, the police department, which had been completely put aside, showed a sad face again. "It's just an umbrella. After all, it's an umbrella, Mr. Criminal Police. A lot of important information is hidden behind that relic. To put it bluntly, the conditions in the future are all related to that umbrella. For example, the mystery of the secret room can also be passed through that umbrella." Get rid of the umbrella." "Ugh?" Li Ran casually added a sentence, which caused great repercussions on the court.Especially the members of the table tennis club and drama club who had personally experienced the secret room at the scene reacted even more exaggeratedly. "Chamber? Through the Umbrella?" "Liran, you solved the mystery of the room secret? Really?" "I untied it, finally this morning." Rizo answered the wide-eyed Kajiwara and Minister Sagawa, and then, "The black umbrella was placed in the men's room. I have already explained the details to the criminal police, so I will skip it here. All in all, I think that in that It is impossible for someone to forget the umbrella in the toilet at this time, so I reasoned that the umbrella was placed there on purpose, which is the prisoner's disguise work. This has been recognized by the criminal police, and the police told the people in the school When it was confirmed, it was true that no one claimed the umbrella. Therefore, the umbrella was left on purpose by the prisoner. I believe that there is absolutely no loophole in my inference. I have always believed so before. "But this morning, when I saw the rain coming earlier than forecast, I found the problem. There seemed to be several contradictions in the reasoning that umbrellas work as camouflage. "The reason is that the weather forecast on the day of the incident was also inaccurate." Except for Liran, everyone in the room looked out the window. Little drops of raindrops can be said to be synonymous with June.Today's forecast was for rain from noon, but it started at nine o'clock. That day-- "Until the day before the day of the incident, the forecast for the day of the incident was cloudy. It rained suddenly the next morning. No one would have thought that it would rain that day, including the prisoner." Yes.The weather on the day of the event was different from the previous day's forecast, and it rained heavily.That's why Yuno and Sanae have the conversation about complaining about the rainy day—— "However, the prisoner chose an umbrella as a camouflage prop. It is a long umbrella that is only used on rainy days. Because it is a camouflage, it cannot attract suspicion. It is unnatural to leave the umbrella in the toilet on a day when it is not raining. It will be discovered immediately that it is a disguise. However, the prisoner could not have predicted that it would rain the next day the day before the incident. "That is to say... If the umbrella is a disguise, then it must have been an impromptu method that the prisoner thought of on the day of the incident. This is very strange." "It's not surprising, is it?" Deputy Director of the Broadcasting Department, Yuko Morinaga, said in his usual hearty voice. "Just take the umbrella and put it in the toilet? You don't need to prepare anything special, even if it's the way you thought of that day..." "Your idea is also reasonable. Then, let's classify the steps of the prisoner to complete the disguise work." Satoran picked up chalk and wrote the letters "A" and "B" in a size that would not interfere with writing "Conditions" on the side of the blackboard. "First of all, as the premise of the reasoning, there are two situations regarding the ownership of the umbrella. First, the umbrella is not the prisoner's personal belongings, and second, the umbrella is the prisoner's personal belongings." He succinctly wrote "not the prisoner's personal belongings" under A, and "is the prisoner's personal belongings" under B.Then tapped on the side of A with chalk. "Consider this first. That umbrella is not the prisoner's personal item. That is to say, the prisoner does not usually use this umbrella. This umbrella is specially prepared for camouflage. In this case, how did the prisoner prepare it?" What about the black umbrella?" This time, Liran did not write on the blackboard, but bent his outstretched fingers one by one to count. "One, I brought it from home when I left home in the morning. "Two, I got it from somewhere on the way to school. "Three, after arriving at the school, I got it from somewhere in the school. "If you can't prepare in advance, the source of the umbrella must be included in these three situations. I will discuss them one by one, starting with the first situation. "I took it from my own home. Then the prisoner took two umbrellas when he went to school, the umbrella he usually used, and the umbrella he used for camouflage. Because it was raining, it made sense. But in this way, except for the umbrella he was holding In addition, the prisoner has another nearly brand-new long black umbrella in his hand. This is very strange. No matter how you look at it, it is very strange. When others see the prisoner, they will definitely have questions like "why is that person holding two umbrellas?" Although you can find all kinds of excuses, it is very fatal to be remembered by others for the characteristics of a camouflage umbrella. It is impossible for a cautious prisoner to act so ostentatiously. If it is a small umbrella, it can be hidden, but that The umbrella is too big, and it cannot be hidden. The first case is ruled out. "By the same token, the second case of 'got it from somewhere on the way to school' can also be denied. Stolen on the tram, or bought in a store, many possibilities can be thought of, but whether it is How come, walking outside with two umbrellas is very conspicuous. This is also ruled out." Riran's reasoning was like a machine gun fired in succession, Yuzuno had to run his mind at full speed. To sum up, we are now reasoning about the second condition.If you think that the umbrella is a prop for camouflage, you must consider the source of the umbrella, because it is very ostentatious to carry two umbrellas to school, so the possibility of bringing the umbrella from home and the possibility of getting it on the way to school are all negated up. ...Well, the reasoning is fine up to here. "Then, the third case. After arriving at the school, I got it from somewhere in the school. There are many students' umbrellas in the school, so it probably works. Think about it, everyone. "If you want to get an extra umbrella, the first thing that comes to mind is whether to borrow or steal it, and who to do it with. But it is still raining after school, and no one will give the necessary umbrella to others, or lend it. Even if it does In yesterday's investigation, the owner would raise his hand to indicate that he lent someone the umbrella. "Also, there is no possibility of it being stolen. If someone's umbrella is stolen, the owner will raise his hand during the investigation." "I have a question." Kaori raised the pen in her hand high as if in a questioning session at a press conference. "Is there no other way? There are many lost umbrellas and umbrellas left in the room that no one wants, as long as you pick them up and use them." "Exactly," answered the childhood sweetheart's question. "It is true that in such a vast campus, there are many umbrellas that are discarded or forgotten to accumulate dust somewhere. Even if they are picked up and used, no one will notice them, and no one will complain. ... But what kind of umbrella is that? What about the umbrella? The black umbrella is almost brand new, very high-grade, without any stains, and the skeleton is intact. Would anyone really throw away such an umbrella or forget it somewhere? It is unimaginable. The testimony of the clerk also showed that the There is no such umbrella. "Brought, borrowed, stolen, picked up. These are the only ways you can get umbrellas on campus. Although you can still go out to buy umbrellas during lunch break, you must carry two umbrellas at the same time as in the previous two cases. Umbrella, so it is ruled out. According to the above discussion, the third possibility is also completely ruled out.” Exclude, exclude, exclude. When I came back to my senses, all the ways to obtain it were denied. "Then, premise A collapses. Then, premise B—the umbrella used for camouflage is the prisoner's personal belongings. This is the only possibility. Let's discuss it next." Liran cooperated with the explanation and waved the blackboard eraser to erase the premise of A.Then tapped the letter B - "Prisoner's Personal Items". "If the prisoner uses the umbrella that he often uses, the problem of carrying it will be solved. Just put the umbrella that protects the rain in the toilet. In this way, only one umbrella is needed. ... But, in this way, there is another A new question arises. How can the prisoner who left the only umbrella on the scene escape outside without getting wet? "When the crime was committed, it was still raining outside. If you left the umbrella at the scene and fled outside, you would definitely get wet. Prisoners would not do such conspicuous behavior. Escape, maybe you can avoid getting wet, but at that time the Needle Palace was near the entrance and exit on the left side of the stage, so the prisoner could only escape from the right side of the stage. Even if the Needle Palace was not there that day, the prisoner would not choose the direction of the crowded teaching building As an escape route. The prisoner originally intended to enter from the right, and then also to leave from the right." "It must be so. The prisoner asked Asashima to unlock the door on the right." Hakamada nodded. "However, in this way, if you don't use an umbrella, your whole body will definitely be soaked. When entering the gymnasium, the prisoner must bring two umbrellas, the umbrella used for camouflage, and the umbrella used after throwing away the first one." "that……" The reasoning became more and more complicated, and Yukino made a summary again. The fact that the umbrella was prepared by the prisoner for camouflage has been denied.So only the case of "that umbrella is for the prisoner's own use" remains.But he couldn't escape the gym after throwing away his umbrella, so he had to bring another umbrella for escape.That's it, Yuzuno understood. No, wait, this way— "In this way, it turns back to the first situation. You must have two umbrellas, but you can't get them from your own home or on the way to school..." "Oh, that's right, that's right, you're smart, Hakama-san!" Li Ran excitedly knocked on the table, it seemed that he didn't think it was necessary to be polite when facing You Nao. "Do you understand? As far as the conclusion is concerned, the prisoner needs two umbrellas anyway. But as I said just now, it is too conspicuous to carry two umbrellas when going to school. Of course, it is impossible for the prisoner to prepare in advance. Then get The second umbrella should only be after school, or with the kind of rain gear you can stash in your bag at school—a collapsible umbrella or a raincoat.” "Ah, that's right," Yuzuno changed her mind.Now the situation is different from the A premise. The "second" under premise B is not a black umbrella thrown in the toilet. No one knows what kind of rain gear it is.So it is possible to disassemble the umbrella. Or does Li Ran already know what that umbrella looks like? Amid Yukino's anticipation and anxiety, the machine gun continued to fire. "Here, I have to discuss the possibilities one by one. The first is to get it in school. Like the discussion just now, borrowing an umbrella will not work. It is raining heavily outside, and no one will give their umbrella to others. Stealing an umbrella is too much. Danger. If the owner reports, the weirdo with the stolen umbrella will be exposed. There is also a possibility that the prisoner himself lost the umbrella the day before and retrieved it on the day of the incident. There is no umbrella in . So this possibility is denied. "So was it picked up? The current reasoning does not have the previous restrictions. The umbrella picked up by the prisoner is not necessarily a brand new one, so it is possible to pick up an old umbrella and use it to escape. "But what about the psychology of the prisoner? If I were a prisoner, I would definitely leave the umbrella I picked up and whose owner was unknown in the toilet, and then run away with my own umbrella. However, this is only Inference without evidence..." "No... I can agree." Xiantang said. "No one would leave something they use every day at the crime scene. Whether it's stolen or picked up, if they get a replacement beforehand, everyone will use it as a disguise." The police department spoke for detectives for the first time today.Li Ran smiled slightly, and he saluted respectfully. "Thank you, Mr. Detective. . . . The possibility of getting it in school is also gone. Then the only possibility left is a folding umbrella and a raincoat." He paused, took a sip of bottled water to moisten his throat. "The prisoner threw away his long umbrella, and then switched to a folding umbrella or raincoat. Such rain gear is not very suitable for use in pouring rain, but as long as it is not deliberately drawn, it will not impress others. The The method is fully justified. "—However, the first condition can absolutely deny this possibility." Ugh?With the voice of doubt, everyone looked at the words written on the blackboard behind Liran. "The first condition, current students, often use the broadcasting room of the old gymnasium" “根据第一个条件，犯人经常使用旧体育馆的广播室，也就限定在了戏剧部、学生会以及广播部的成员中。回想一下事件当天他们的的行动。 “首先是戏剧部。他们三点以后在活动室里集合，然后去了旧体育馆。在雨中所有人都打着伞。对吧？” 裏染向梶原确认，他保持着警惕的同时，表示了同意。 “接下来是学生会。正木和八桥被警察拘留到了六点多，然后回到学生会室与一年级的成员会合。当时又下起了雨，回去的时候他们还发牢骚。当时所有人都打着伞，对吧？” “是的。昨天八桥在你面前说过。” 面色认真的正木表示同意。 “那么最后是广播部。所有人在活动室里等待朝岛，但过了三点二十分响起了公告事件的全校广播，于是在很早的时候就和其他学生一道回家了。当时还在下雨，所有人都打着伞。对吧？” “是的。我不是说过么。我们不知道朝岛与事件有关，所以大家都回去了……” 森永悠子面对低年级学生毫不畏缩，还用了有些威慑力的口气。 裏染在讲桌上张开双臂，“总结下刚才的线索，就会变成这样。犯人是经常使用旧体育馆广播室的人。他，或者是她把自己的伞扔在体育馆里，使用折叠伞或其他便携性雨具逃跑。随后与同伴汇合，在雨中和其他同伴一起外出！你们明白这意味着什么吗？ “犯人已经没有了长伞。但在数名朋友的面前，必须使用雨具，折叠雨或是雨衣。不论是哪一种，其他人肯定会感到奇怪。外面的雨这么大，为何会用这么小巧的雨具？第二天当警察进行确认时，应该能回想起这个异常之处……但是，所有的社团中都没人提出。” 有可能是嫌疑人的当事人互相对视着。纷纷嘟囔起“没有人使用了折叠伞或雨衣吧”。 “就是说，不论犯人是谁，那个人肯定拿着长伞！这样一来又如何呢？明显产生了矛盾。犯人回到教学楼后，从哪里得到的长伞？根据我刚才的证明，如果犯人得到了另外的伞，为了避免风险，肯定会将那把留在体育馆里。 “使用折叠伞的可能性也被否定了。这样一来……” “等下”，仙堂打断了裏染的话。 “在经常使用广播室的人中，只有一人没有和同伴一起回去。就是秋月美保。” 被叫到名字的瞬间，美保发出了轻声的尖叫。 “可疑的人只剩下她了。” “是的。但是刑警先生，秋月可是空着手进入后台的。” "...!" “她本来就没有可以扔的伞。有一点我想放到后面再讲，那把伞是男性用伞。不可能是秋月的私用物品。 “……因此，针对伞的来源，考虑到的所有可能性都被否定了。” 裏染说着把B也擦掉了。只留下了粉笔的粉末在黑板的周围飞舞。 那把黑伞不是犯人用来伪装的。从那一天的早晨到放学后，犯人不可能得到那把伞。 而且，那把伞也不是犯人自用的。如果是犯人的私有物，在逃到外面时必须还有另一把伞，而经常使用广播室的人绝对拿不到另一把伞。 柚乃颤抖起来。那把在体育馆的厕所里发现的黑伞，连警察都觉得掉在哪里都不奇怪而没有理会，如今看来却孕育着许多矛盾，逐渐成长为一个巨大的怪物。 推理还没的结束。 “……根据以上推理，犯人在事件当天不可能得到那把黑伞。也就是说，不可能用伞当作伪装。——但是，伞却出现在了现场！” 裏染加经、强了语气。 “这是为什么呢？难道那把伞与事件没有关系，只是被无关的人忘在了那里？不，这也不可能。在还佐川清白时，我已经证明了那把伞不是单纯的失物。不是失物，但也不是伪装。那究竟是什么呢？ “剩余的可能性只有一个。那是犯人使用的伞，但不是用来伪装，而是以防雨为目的拿到了杀人现场。但因为某种原因，犯人不得不把伞留在现场。大概是突然性的偶然原因。犯人随后回到教学楼，想办法拿到了别人的伞，当作自己的来用。” “这是什么意思？”袴田有些糊涂地问道。 “你的意思是，犯人扔掉了唯一的伞，空着手在雨中逃跑？这样混身不都湿透了吗？这是不可能的。你刚才也做了这样的推理吧？” “嗯。但我刚才的推理有个大前提，就是犯人一开始就打算用伞作伪装。现在我说的是，犯人本没打算作伪装，但因为某个原因不得不扔掉伞，结果反而发挥了伪装的作用。” “呀，我还是不明白你的意思。犯人逃到了哪里？” “这点我也不知道。不是伪装也不是失物，那么我只能想到一种可能，就是犯人无奈的把随身携带的伞扔掉。但这样一来，犯人又无法外出了。 “难道犯人没有逃向外面，一直在后台？不，这样也不对。从后台出来的只有以梶原为首的戏剧部部员，他们是从活动室来的，即使犯人是他们之一，为了再次回到活动室也必须要外出。毫无疑问，犯人必须离开体育馆。 “但是，外面下着大雨。混身湿透的跑进教学楼？这样的举动太不理智了。经常使用广播室的人聚集在活动室或是来到体育馆时，身上都没有湿。啊，只有一人全身湿透的离开了学校，那个人是例外。” 裏染看向畏缩的秋月美保，“犯人要想逃跑，只能在不弄湿衣服、不引人注意的情况下逃到外面。犯人扔了自己的伞，在后台和广播室里也没有其他伞。犯人是怎么逃的？还有什么办法？能不弄湿衣服逃跑的办法……” 他的话停住了。再次拧开瓶盖，喝了口水。观众都一动不动的等着演讲人的后续解答。 解答密室之谜。 “……还有办法。”裏染缓缓的说道。 “答案从一开始就明显的展示在了我们的面前，清楚得不能再清楚了，你们为什么没察觉到呢。——大家请去走廊。差不多该来了吧。” 裏染说着指向了门口，一行人从佐川部长那一端开始按顺序站起身来。仙堂和袴田起身，柚乃纳闷来的到底是'什么'，也跟在后面。 约三米宽的走廊里被二十五个人挤得满满的。裏染最后一个从大会议室里出来，反手关上了门。 他探头看向走廊深处，似乎在确认什么。 “啊，好像来了。大家看那边。” 所有人都看向了裏染指的方向—— “怎么会！”仙堂第一个大喊。 几名警服湿透的警察走了过来。There is one more thing. 随着他们从走廊远端靠近会议室，身影越来越鲜明。周围接边发出惊叹声，一行人中只有裏染冷静的在做解说。 “是的，大家都明白了吧。犯人就是和那个一起离开了体育馆。 白户的部下们从很远的地方搬来的东西，就是盖着蓝色塑料布的双轮车。 “仔细一想，其实很简单。进入了体育馆然后又出来的东西只有一个。就是那个双轮车的前部。” 裏染再次让所有人回到房间里，从拉门的间隙指着蓝色塑料布。会议室里又加入了几名推来双轮车的警官。 仿佛是推理进入了最后关头，为了让犯人无处可逃似的。 “那个双轮车上堆满了许多用于戏剧的道具。有家具之类的大家伙，外面还盖着防雨布，所以货物的高度将近二米。从前面几乎看不到后面的情况，从后面也是同样。大家知道了这一点后，再来复习一下当天双轮车的动向。 “首先是前半部分进入了体育馆内，遇到了一个有高差度的台阶，因前面的三条和梶原离开了，所以推不进去。那两个人走向后台，拉起了幕布，随后听到了袴田妹的尖叫。” 还留在入口处的志贺庆介和松江椿很着急，想进体育馆。但巨大的双轮车挡住了路，进不去。所以他们无奈的再次把双轮车拉出来，放到一旁，只有人进去了。随后志贺很机敏的锁上了门。 听着裏染的说明，柚乃和刚才一样，又有一种恐怖抚摸着后背的感觉。 是的，只有双轮车在密室中进了又出。为什么自己没有发现呢。 “这里的要点在于，梶原等人进入右后台后，直到双轮车被拉到外面之前，有厕所一面的走廊完全是视线的死角。就是说，犯人藏在了厕所里。因为某种理由，犯人不能从右侧逃跑，想要从左侧逃跑却又遇到了戏剧部，而且外面还有针宫。犯人正束手无策时，突然发现了机会。盖着防雨布的巨大双轮车。还有尖叫声。后面的人看不到前面。后面的人想要把双轮车拉出去再进来。只要躲在里面，就能在戏剧部部员和针宫都注意不到的情况下逃出去……。犯人看准这个瞬间靠近双轮车，藏身到防布雨底。当然，双轮车因此变重了，但拉车的人数也从四人减少为两人，拉车人把变重的原因归于人数减少，不用担心露馅。 “但是，这又会产生一个问题。就是伞。犯人的伞太大了，而装满东西的双轮车又没有多少空间。犯人为了自己躲藏，不得不扔掉伞。对。因为伞阻碍了逃跑。这就是伞被扔在厕所的理由。 “防雨布会为自己挡风遮雨，所以没有伞也无所谓。而且来到外面后的情况与舞台右侧不同，走廊近在咫尺。犯人只要等到体育馆外空无一人时，不慌不忙的走进教室楼就好了——实际上，这个机会很快就来了，针宫和正木听到尖叫后马上就向体育馆里窥探。只有像这样利用双轮车逃跑，犯人才不需要伞。” 观众们刚从冲击中恢复，裏染的推理就宛如波纹般浸入了他们的脑海。 当时在现场的人，以及调查了现场的刑警们都哑口无言了。特别是亲手帮犯人逃跑的戏剧部的众人，加之刚才有关广播室的打击，就像是掉了魂似的。自己的尖叫声为犯人逃跑创造了机会的柚乃也有同样的心情。 “双轮车啊。的确是个盲点……” 香织的自言自语代表了所有人的心情。 “这也是正常的想法。之前我的想法也局限在了用伞逃跑，直到反向找到答案后才想到这一点。很可笑吧。我甚至想到绑线锁门的方法！” what!what!what!裏染如他所说，大笑了起来。 “双轮车变成盲点的理由只有一个，就是门被双轮车完全堵住，被物理性的封锁了。因此所有人都认为犯人没办法从那里出来。本来有厚度的双轮车，被当成了门板。这样不行。 “——因此，密室之谜终于解开了。除此以外，犯人应该没有别的方法在不被雨打湿的情况下逃跑。那么，咱们回到原点吧。” 裏染回过头，在黑板上的“第一个条件”下面写字。 写的当然是“第二个条件”。 “我刚才说第二个条件和第三个条件都与不在场证明有关，我要证明犯人什么时候进入体育馆，又是什么时候出来的。我刚才的冗长证明解释的当然是后者，什么时候出来的。 “犯人藏在双轮车的防雨布下出来。戏剧部部员拉出双轮车是在发现尸体的同时，也就是三点十五分。反言之，犯人在三点十五分之前都没有从后台出来。” 裏染在讲话的同时挥动粉笔，写下了条件。 ——“第二个条件三点十五分之前没有不在场证明” 搜查的幅度再次缩小。 “以上是我关于丢弃的伞和密室的最终结论。怎么样，刑警先生？” “裏染向仙堂征求意见，警部还在发呆。 “呀，这个随你怎么说……” “哦，很没底气的发言呢。你不批评我的猜测成分太多吗？” “虽然是猜测，但没有其他制造密室的方法了……” “但毕竟只是猜测。” 裏染的话像是在否定自己的结论。 “关于伞的推理暂且不谈，从伞派生出来的密室诡计没有确凿的证据。正如刑警先生所说，没有其他的方法。但是，我的推理毕竟只是逻辑推演，可信度不高。犯人在三点十五分之前一直呆在体育馆里，随后利用双轮车逃离，这个结论需要证据来印证。很有意思的是，在我完成这段推理后，这个证据就自己找上了门。 “那就是早乙女泰人的证词和秋月美保的证词。” 观众的视线从站面黑板前的男生，转到了混在己方中间的少年和少女。 “早乙女目击到秋月没有打伞，从体育馆的右侧门出来，敲了几下门后逃跑似的飞奔而去。我问他具体时间，他回答看到秋月后，又看到了戏剧部的人拖着双轮车过来。就是说，是在戏剧部到达体育馆之前的事情。 “警察似乎怀疑秋月就是犯人，但我不这么认为。有几个理由。其一，她丝毫没有隐藏自己的行动。进入后台时被佐川看到，出来时没有打伞也引人瞩目。作为犯人，敲门的举动意义不明。其二，她和朝岛一样空着手进入后台，不可能把伞带进去。其三，也是最为物理上的理由，在她离开后，有人锁上了右侧的门锁。从外面无法锁门，而且她也没有做出那样的动作。这样一来，只能认为有人从内侧上了锁。那个人随后故意制造出密室，从现场消失，因此可疑度远远高于秋月。比起把秋月视为犯人，锁门的第三者更加可疑。” 袴田开口说道。 “有人看到秋月出来，但没有证据表明犯人还留在里面……” “是的。但我后面的推理会增加这个结论的可信度。在将近三点十五分时，犯人还在后台。于是从右侧出来的秋月似乎在对里面的人传达什么信息，敲了敲门。这与犯人因为某种理由，不能使用右侧的出口，最终隐藏在双轮车里逃出的假设完全符合。 “我相信只要直接与秋月面谈，肯定能更加接近真相。于是把她叫来了学校，听了她的供述。” 他省略了“没经过警察允许”的部分。 “她在后台的经历十分可怕。就结果而言，多亏了她的证词我才能确定犯人。那么，还是让她本人来讲述吧。” 看来似乎是事先约好的，裏染让开位置，美保回了一句“好”，同时站了起来。 她的表情很紧张，但能感到她心中已经凛然的拭去了恐怖。她代替裏染站在所有人的面前，深呼吸了一口气，讲出了和几个小时前同样的故事。 “一周前……朝岛打来电话。” “就是这么回事。谢谢大家。” 说完后，裏染让美保回到座位，自己站回了原来的位置。观众听完在杀人现场与犯人共处过一段时间的少女讲述的冲击性体验后，再次一片惊呼。 “请大家冷静一点。特别是刑警有许多话要问她吧。但等我的推理结束后也不迟。解谜环节即将进入最终关头，请继续听一会儿。” 众人因裏染的话冷静了下来。他做法看似是在出风头，但柚乃知道他的真实想法。他想尽可能转换犯人对美保的注意力。 裏染咳了一声，“我觉得秋月的故事都是真实的。她不是犯人的话，就没有必要撒谎，而且进出后台的时间、掉落的缎带也和其他证据一致。她证印了我的所有推理。 “首先不用多说的是关于密室的部分。她想关住犯人，所以传达出自己就在右侧门外的信息。因此犯人不能从右侧逃离。那么就只能从左侧思考逃跑的方法，考虑到时间的问题，从那里出去的方法又只有藏在双轮车中。我的推理是正确的。 “另外，关于第一个条件有一个微妙的点，就是犯人真的是以DVD为目标吗？真的是犯人使用了广播室吗？这个部也得到了补充。因为朝岛是由于影像的交易而被叫过去，所以犯人拿走DVD就是理所应当的行为。还有，朝岛死后有人从二层的楼梯走下来，这说明犯人曾去过广播室。 “接着，黑伞是犯人的私用物品，这个结论也得以证实。犯人去广播室时，伞被放在了右后台。广播室在左侧。厕所同样在左侧。如果犯人一开始就打算把伞当作伪装，去舞台左侧时肯定会带着伞，然后放置在厕所里。犯人没有这么做，而是去了一趟左侧，然后回到右侧拿伞，然后又去左侧的厕所放伞，为了逃离再次来到右侧……这样相当花了双倍的功夫。犯人的时间很宝贵，不可能采用这么没效率的行动。因此，那把伞肯定是犯人的私用物品，本来就没打算当作伪装使用。 “还有一点，也是最根本的问题。犯人是单人做案。朝岛在电话里说，犯人要与他一对一的交易。因此犯人只有一人，有共犯的可能性也消失了。” I see.推理逐渐得到了证实。柚乃终于明白了裏染“刚才的话证明了我的许多想法”那句话的意思。 “那么根据以上的推理，我来想象下犯人采取的行动吧。” 裏染这次自己编起了故事。 “犯人杀了朝岛后，为了寻找他身上的东西把遗体移到了有照明的舞台上，然后找到了DVD，但不知道两张中的哪张是自己的目标。幸好犯人在左口袋里还找到了钥匙，离戏剧部的到来还有充足的时间。于是犯人去广播室确认了里面的影像。因为很熟悉广播室，所以五分钟就能完成吧。确认了哪一张是目标后，犯人把配线复原，离开了房间。但此时唯独忘了把摇控器的模式切换回去。 “犯人压低脚步声回到舞台上，想把学校介绍的DVD和钥匙串放回去。但这时出现了一个问题，血流到了裤子上，因此不能碰左口袋。即使戴着手套，如果沾上血说不定仍会惹人怀疑。犯人无奈的把钥匙放回了右口袋。然后正当他休闲的想要从右侧的门逃走时……突然察觉到了异常。 “伞上有一个缎带。正如大家所知，这是秋月临机一动留下的缎带。犯人感到纳闷，这是谁放的？还有别人在？犯人偶然间看向门，本应该锁上的锁，如今却开着。犯人为了确认，想把门打开一条缝……此时门发出了'咚'的响声。” 裏染突然大喝了一声，坐在前排的几个人身体颤了一下。 “犯人当然也吓了一跳，吓得混身颤抖吧。有人就在门外。这样一来就无法逃跑了。犯人为了阻止那个人进来，从内侧上了锁。想想看，这个举动是犯人为了保护自己反而锁住了房间，的确是有些罕见的密室。 “于是，不能从右侧逃跑的犯人穿过舞台来到了左侧。但这边也有问题。针宫就站在厕所的窗外，而且戏剧部的部员正推着双轮车向这边过来！他们比往常的时间早了五分钟，对犯人来说这是不幸的偶然。现在出去会被发