My Partner is Shiina Mashiro

"This oil barrel doesn't look like something left by the Japanese."

Liu Sen lifted the lid of the oil drum.

"There is still some oil in it, I don't know if it is gasoline or diesel... It seems to have been filled not long ago"

"Also, the plastic hose on the ground is still quite soft to the touch, and it hasn't aged and hardened at all, which means that this thing was sent here not long ago?"

The room was so small that Zhenbai and Liu Sen could complete the investigation without much time. Liu Sen snapped his fingers in Zhenbai's direction.

"Okay, let's get out of this damn place now."

"Zhenbai, turn off the flashlight of the phone... Maybe we can give Xiao Ai and Jill a nice surprise."

……

"Sister Jill, I don't know what happened to Brother Liu Sen and Sister Zhenbai..."

"Don't, don't worry! I promised Officer Liu that I will protect your safety even if I risk my life. Moreover, the support force from the Metropolitan Police Department is already on the way and will be here soon!"

"It's because of you stupid policemen that I'm worried!"

Gilgamesh yelled at Mumu Thirteen, and Her Ladyship was speechless. Dozens of people searched the whole night, but they couldn't find where Liu Sen had gone. What are you eating!

The Queen was furious, and Megusa could only retreat to the side with a smile on her face. For a moment, the atmosphere in the corridor outside the small room where Yui Hihama Yui and Hikigaya Hachiman were killed became very depressing.

"Sister Jill, listen, I really want to hear something!"

Inexplicably, the brown-haired girl Hui Yuanai lay on the ground.

"I heard some rumbling sound from the ground, it's very dull!"

"Sen, I'm hungry, let's go have breakfast."

"Let's talk about breakfast later... Jill, Xiao Ai, aren't you surprised to see me?"

"Promiscuous, Xiao Ai and I have been looking for you all night!"

Gilgamesh's expression froze, and he wanted to rush towards Liu Sen while speaking.

"Sister Jill, don't be impulsive!"

Xiao Ai hurriedly grabbed Gilgamesh's clothes.

"That's not brother Liu Sen, how could brother Liu Sen appear in such a place?"

"Xiao Ai, what are you talking about?" Gilgamesh looked confused, "Whether it's hairstyle, figure or appearance, this is Liu Sen and Zhenbai."

"But Miss Jill, think about the structure of the small room at the scene of the crime."

Xiao Ai said gesticulating.

"Counting the vents, there are only three exits in that small room, and each place leads to the underground."

"We've been waiting here for news since brother Liu Sen disappeared, so it's impossible for brother Liu Sen and sister Zhenbai to enter through the door."

"Hey, it seems very reasonable, tell me honestly, who are you!"

Gilgamesh guarded Xiaoai behind him vigilantly. After all, the hostile players didn't know where to hide, so Gilgamesh couldn't be careless.

Please, Xiao Ai reasoned casually, you really believe it...

Liu Sen laughed weakly, "If you want to know the real answer to this question, don't you know everything by going to this small room for yourself?"

"Yes, but we don't know if you are the real Brother Liu!"

Why even Memu Shisan is dubious, hey...

With the half-believing Gilgamesh and the others, Liu Sen and Zhenbai led the way into the small room where the crime took place.

"This, this is?!"

Gilgamesh exclaimed.

"What the hell is going on, why is this place turned upside down?!"

"The original ceiling turned into a floor..." Mu Musashi looked at everything in the room in surprise, "Isn't this really magic?!"

"Xiao Ai, now you understand." Liu Sen smiled and touched the little head of Xiao Ai who was so surprised that he couldn't speak, "Now you understand, where did Zhenbai and I come from? from."

"Could it be... Could it be that place?!"

Xiao Ai pointed to the vent that should have appeared on the roof.

"That's right, it's just like what you said." Liu Sen nodded, "Mabai and I crawled out from the vent on the ceiling, of course, the direction of the vent has already been reversed at this time of."

"The structure of this small room is much more complicated than we imagined."

Liu Sen gestured to Zhenbai with his eyes, and Zhenbai who knew it immediately took out a pen and paper to make a drawing according to Liu Sen's instructions.

"If I'm not mistaken, this small room is a cylindrical metal structure with a drive shaft around it, which can be turned over like a drum washing machine. Normally, it is a small room with a vent. After turning over, That is, it now has a tunnel that can lead to the basement."

"Hey, you just said the structure made of metal, right?" Gilgamesh was a little puzzled, "But this room is not all made of metal, right?"

"It should just be painted." Liu Sen replied, "There is no other choice to make such a movable structure except using metal materials."

"Actually, in previous investigations, there have actually been many phenomena suggesting that the structure here is an all-metal structure, for example..."

"For example, the mobile phone signal is very poor." Xiao Ai quickly answered, "Metal mesh or metal walls can effectively shield electromagnetic waves, so is the mobile phone signal in this small room surprisingly poor?!"

Xiao Ai is Xiao Ai, the reserve of knowledge can be said to be quite rich.

"But Brother Liu, I always feel a little baffled." Mu Mu Shisan scratched his head, "A small room that can be turned upside down...Why do you make such an unreasonable setting?"

"I have thought about the answer to this question."

Liu Sen pondered for a few seconds.

"Although it's just a wild guess, this small room is likely to be an incineration device based on the evidence he and Zhenbai found during their underground exploration."

"When Zhenbai and I were underground, we found several small rooms, including bedrooms, bathrooms, wards, etc. We also found a lot of medicines and medical records. Now that I think about it, those rooms probably formed a temporary The underground hospital, according to the medical records we found there, the Japanese army faced the plight of lack of medicines, and the death rate in the army can be said to be quite high. The reason why the treatment places are placed underground is probably to prevent infection. .”

"The dead bodies were transported to this small room that can be turned upside down through the rails in the air-raid shelter. As long as this mechanism is used to turn the room upside down, the body can be isolated."

Liu Sen crossed his arms and made his own judgment. This underground place was obviously left behind by the red deer of the Japanese Army who stayed in Japan back then, but now, it is used by the murderer to kill people. It is really a bad place. Big irony.

Chapter 260 Three

The real situation is not much different from what Liu Sen thought. At that time, there was indeed such a situation. The land was being bombed indiscriminately, and everyone had to hide in the air-raid shelter. Will be completely suffocated due to lack of oxygen.

Dead bodies had to be disposed of as quickly as possible, but it was difficult to transport them out, but with this system, they could be disposed of without leaving the air-raid shelter.

"In this way, the reason why Hikigaya Hachiman's body was damaged so badly is also because that small room was originally an incineration facility?"

"Mabai and I also found the ashes of four teenagers underground." Liu Sen nodded and answered Xiao Ai's question, "Those ashes should also be fired here... In this way, Zong Wu Has the mystery of the high-level underground facility been solved? The underground of the school turned out to be a crematorium, which is really ironic when you think about it."

"However, taking this mystery as an opportunity to solve it, we finally know the truth about the case of Hikigaya Hachiman and Yuigahama Yui."

"Although so far... I still have no way of judging whether the person who died here was Hiki Valley Hachiman."

Liu Sen's words paused here, and his tone was a little unnatural.

"...I think, when Hikigaya Hachiman and Yuigahama Yui were killed, this small room was like it is now, and it should be reversed."

"Really, brother Liu, don't you already have any basis?!" Mu Musan asked expectantly.

"Well, I still remember that Zhenbai said such a sentence when he was investigating." Liu Sen replied.

"Huh? How did this spectacle leg stick to the ceiling?"

"Does it mean that the eyes and legs are sucked to the ceiling?" Gilgamesh pouted, with an expression of "I will be anxious to you if you don't say it soon".

"That spectacle leg was lent by Ms. Riko to Yuigahama Yui. There is a pinhole camera installed on it. If I didn't guess it, it is a structure containing a magnetic core. It is not very strange that it will be "sucked" to the ceiling. "

"So that's it!" Xiao Ai, who figured out the mystery, clasped her right hand and slapped her left hand, "Because this small room is an iron box, things like magnets will be attracted to it."

"Magnetism is just one of them." Liu Sen stretched out a finger, "But there is one thing that deserves our attention more. Didn't you notice the abnormality of what Zhenbai said?"

"If the room wasn't turned upside down when Yuigahama Yui and Hikigaya Hachiman were killed, there would be no reason for the pinhole camera to be sucked into the ceiling vent."

"Then after the burn continued for a while, the room flipped back to its original position again, and the pinhole camera continued to be sucked to the ceiling."

"But according to what you said, brother Liu..." Mu Mushisan's expression was a little frightened, "Isn't Yubihama Yui's broken glasses...?!"

"That's right..." Liu Sen let out a long breath, "It was when she was attacked by the murderer who came out of the ground... There is no other possibility."

"And there's this stuff..."

Liu Sen handed a photo taken by himself to everyone.

"This is a photo I took from the ground floor of the Gendarmerie Command...It is very similar to the graffiti on the first and second floors of the Gendarmerie Command, but the fluorescent paint is already very weak. If my eyesight is not good enough, I may have noticed it No."

"After absorbing the sunlight for ten to twenty minutes, the luminous paint can continue to illuminate in the dark for quite a long time. This graffiti of unknown shape was still glowing slightly in the ground without any light source until not long ago. This is Meaning it was probably painted over by someone in the past."

"Hey, you mean that in the past period of time, did other people appear in that underground facility?!" Gilgamesh was finally not confused this time, "What kind of person would appear in that underground facility?!" place."

"Besides the murderer, who else could it be?!"

Liu Sen's eyes widened, and his tone was unusually certain.

"The graffiti in the Gendarmerie Command was clearly painted by the murderer himself."

"Why did the murderer do this..." Mashiro was thinking, "Or, are these animal patterns what the murderer wants to express?"

"To solve this problem, it is necessary to connect everything that has happened in Sobu High School so far...Before the fourth case occurs...this question must be answered."

"No way, brother Liu, do you already know that there will be a fourth homicide in Zongwugao?!"

Liu Sen couldn't answer Mu Mushisan's question, so he couldn't tell him that this was the answer given by the Lord God, right?

"Don't bother me just yet..."

Liu Sen asked everyone present to be quiet for a moment.

"Looks like this recorder needs a second appearance."

Liu Sen has been using it to record since the case of Ebina Jicai falling from a building. Later, when he fell down, Zhenbai took over the recording pen. When Zhenbai also fell down, the owner of the recording pen It became Xiao Ai again.

Now that the recorder is back in Liu Sen's hands, his intuition is telling him that the root of all mysteries lies in the smallest detail...

……

"In order to protect the privacy of the students, Mrs. Shizuka always used nicknames to address the students who go to psychological counseling, and Ebina Himina also used 'snow lotus', 'strawberry', 'mango' and the like in her diary. It shouldn’t be a coincidence that the characters in it are called by things.”

……

"Hey, animals?!"