My Partner is Shiina Mashiro

Xiao Ai stated her point of view, the so-called criminal investigation is to analyze the correct information from the vast number of wrong answers, and now Xiao Ai is doing such a job.

"Yanoshita Yukino was lurking in that abandoned small western-style building, and then walked out the next day as if nothing had happened, pretending to be at Zongwu High again."

Conan is also analyzing that the abandoned western-style building is indeed a good hiding place, and there was a commotion in the campus that morning because of the sudden explosion in the basement, and the police poured into the campus in large numbers, wanting to fish in troubled waters It's not difficult at all.

"Is there a possibility... Yukinoshita Yoshino and Hikigaya Hachiman first bypassed the surveillance video and entered the small room in the basement, and then when they were discussing some ulterior topics, Yuigahama Yui suddenly broke in .”

"Yukinoshita Haruno, who found out that the live broadcast was wrong, first injured the back of Hikigaya Hachiman's head, and then used some method to stun Yuigahama Yui."

"Finally, in order to destroy the body and traces, I set fire to this small room in the basement."

"But, the surveillance camera in the basement has a 360-degree view without dead ends. Since Yuigahama Yui has been photographed..."

Conan felt that there were quite a lot of irrationality in Xiao Ai's analysis, so he retorted unhurriedly.

"Then how do you think Yukinoshita Yangnai set this small room on fire?"

"Perhaps they poured gasoline on Hikigaya Hachiman's body?"

"Of course there is no problem at first glance. Pour gasoline on Hikigu Hachiman's body, then throw a match or use something like a lighter to light it... But. You really have to read the testimony that sister Shiina left for you. Is it?"

"What do you mean by that!" Xiao Ai glared at Conan, "Do I look like the kind of person who loses everything?!"

"No, I just think that someone who can be a pharmacologist should have better observation skills..."

"Shut up!" Xiao Ai interrupted Conan angrily, "Listen to me first."

"Actually, I have had this feeling for a long time...It seems that someone is looking forward to all this happening, from Ebina Himina to Miura Yuiko, and now Yuigahama Yui and Hikigaya Hachiman, behind all of this There must be something dark about it.”

"Someone must have deliberately created these incidents in the school, and that person must have hated everything in Sowu High, otherwise it would be impossible to do such a cruel thing."

To be honest, Xiao Ai's analysis of Yukino's motive for committing the crime is undoubtedly quite reasonable.Because until now, Yukinoshita Yoshino's thoughts have not changed.

......

"However, instead of learning the lesson, Zongwu Gao has intensified his efforts."

"Even if a few lives are consumed, it won't help, this place will not change, just like this world will never change—"

"It's just, stupid..."

......

From the notes left by Mashiro, Xiao Ai can easily see that although Yukinoshita Yoshino has been pretending that she has nothing to do with me, deep down in her heart she still hopes that Sobuko will disappear one day.Now that the members of the school board of Sobu High have all stepped down, for her, the death of Hikigu Hachiman must be much more valuable than the death of Hanazawa Coriander.

"Whether it is the motive of committing the crime or the reasoning process, there are no loopholes in your statement..."

After Xiao Ai finished speaking, Conan turned to a certain page of the real white notebook and handed it to Xiao Ai, "But as a pharmacologist, you shouldn't be unable to see the problem with regard to igniting gasoline. "

"Is there any problem with igniting gasoline?" Xiao Ai asked suspiciously, and when she looked at the notes left by Zhenbai again, her eyes suddenly widened, "Could it be...?!"

"Yeah, you finally found out."

Conan took out the lighter and made a lighting action.

"If Yukinoshita Yoshino really poured out all the flammable liquid in that plastic bucket and lit it with an open flame, then this might happen—"

"Probably they will "return to ashes together"..."

At this time, Xiao Ai finally understood where her reasoning went wrong.

"It's because I didn't read the notes left by Miss Zhenbai carefully." Xiao Ai admitted her mistake generously, "I will review this point carefully."

"Yes, because according to the tests and analysis of the surveillance personnel, those chemical substances can form a volatilizer. To be precise, if those chemical substances are mixed with gasoline, it can greatly increase the volatility of gasoline."

"But I haven't tested the gasoline yet, how do you know that the gasoline is mixed with volatile agents?"

"It's true... this point has not been checked by the surveillance personnel. But from a common sense, these chemicals were stolen not long ago. Apart from being used to increase the flammability of gasoline, I really can't think of it. There are other uses for it."

"In other words, it's the same person who stole the gasoline from the milk tea shop owner and the medicine from the chemistry lab?"

Xiao Ai followed Conan's train of thought and concluded.

"yes..."

Conan hugged his chest and nodded.

"If my reasoning is correct, she should be the one who stole—"

"Yuihama Yui!"

Chapter 250 Four

"Let's go back to the topic just now." Conan snapped his fingers lightly, interrupting Xiao Ai who was in deep thought, "According to my speculation, I'm afraid, if you really pour out all the gasoline mixed with these chemicals, In a few seconds, the narrow room where the crime occurred will be filled with flammable gas."

"Don't forget, there are piles of test papers stuffed at the scene. Just imagine, if you light a match in such a place full of fuel gas, what will happen then?"

Conan asked Xiao Ai, and while asking, he danced and made an explosive gesture.

"Detective, what do you mean, if Yukinoshita Yang is the murderer who set the fire... then she must not be able to escape herself?"

Xiao Ai thought for a while, then spoke slowly.

"Even if Yukinoshita Yoshino escaped with a narrow escape, it's unlikely that he didn't have any burns on his body, right?"

Conan retorted while wagging his index finger.

"But in fact, when Police Officer Liu saw Yokino Yukinoshita, she didn't have any injuries at all."

That's true, Xiao Ai vaguely remembered that Yukinoshita Yono's skin was in good condition, white and tender, without any trace of smokiness.

"...Then, what if that's the case?"

A wrong answer was ruled out, and Xiao Ai continued to propose possible hypotheses.

"Since, as you said, the scene should have been filled with flammable gas at that time, isn't there another way for Yukinoshita Haruno to ignite the gas? If you use that method, it can definitely be done in the future." It was ignited without damage."

"Ignite away from the scene... Is this the way you said?"

Conan took out his mobile phone and lightly pressed the button on the mobile phone.

"Yes, it's the mobile phone." Xiao Ai nodded, "Yukinoshita Haruno just needs to put Hikigaya Hachiman's mobile phone on the puddle of gasoline, and then leave the scene. After that, she just needs to call Hikigaya Hachiman's mobile phone, the phone will light up, and then...boom!"

It is indeed possible to use a mobile phone as an igniter. The radio frequency current generated by the mobile phone when it receives a signal can generate an electric spark, which is why the gas station prohibits the use of mobile phones.

This speculation is quite reasonable, and Hikigu Hachiman's mobile phone was destroyed after that. If the prisoner really arranged this way, even the effort of destroying evidence could be saved.

"Then let's ask Officer Megure to check for us now." Xiao Ai told Conan, "If you go to the Telecom Bureau to check now, you may be able to find the number that Yukinoshita Haruno called Hikigaya Hachiman. What about the call log?"

"No need..." Conan waved his hand casually, "It's impossible to find that kind of thing."

"Hey?"

"There is no record of Yukinoshita Yono and Hikigaya Hachiman in the telecom bureau because of the testimony of the security guard."

Conan flipped Zhenbai's notes to the next page, which densely recorded the testimony of the director of the Sobu High Security Department.While pointing at the testimony, Conan did not forget to preach to Xiao Ai.

"Careful observation and bold speculation are indispensable to break through the mystery laid by the suspect. If you want to solve everything that happened at Zongwu High School as soon as possible, you must not let your emotions affect your investigation and reasoning. "

"Well, I see. If possible, I will learn more from you in the future."

Xiao Ai accepted Conan's criticism generously, and then nodded seriously.

Conan was taken aback by Xiao Ai's expression and movements. He thought the other party would give him an annoyed look, but now he learned from him humbly.

"Are you OK?"

"What can I do?"

"Okay...then I'll continue."

Conan gave Xiao Ai a strange look, and continued talking only when he saw that the other party didn't seem to have any problems.

"According to the testimony of the director of the High Security Department of Sobu, the signal in the small room we are in is quite poor, and it can only be connected barely at the water storage tank."

"And Hikigu Hachiman's cell phone is located far away from the water storage tank, so it's probably impossible to remotely control it from there."

"...This answer is not correct. Even if we found the reason why the fire continued to burn for more than an hour, we seem to have overlooked something?"

"Well, indeed."

Conan nodded and expressed his doubts.

"This is the second suspicious point I found after surveying the scene...For this case, the method of igniting the gasoline is a very critical part."

Folding his hands behind his back, Conan said while pacing.

"Because the gasoline found at the scene is a highly volatile mixture of gasoline, the prisoner must have no way to ignite it on the spot without injuring himself, but he cannot use the mobile phone to remotely control it..."

"...In other words, is there a third situation that we haven't considered?"

Compared to Conan, Xiao Ai was much quieter when she was thinking about problems. The tea-haired girl took a sip of the coffee she bought at the convenience store, her lips parted slightly.

"Excluding the possibility of external ignition, Hikigu Hachiman couldn't have ignited the gasoline himself, right?"

"...What did you just say?!"

Conan, who was pacing, slammed onto Xiao Ai's shoulder, and a flash of lightning flashed in his mind.

"...Let me go! I mean it couldn't be Hikigu Hachiman who lit it himself."

Xiao Ai looked flustered, and Conan, who was already overjoyed, hugged her tightly.In the past, Liu Sen often hugged Xiao Ai in his arms. When she was in Liu Sen's arms, what Xiao Ai could feel was a strong father's love.It was the first time that she had such intimate contact with the opposite sex, and Xiao Ai's face blushed unconsciously.

"Huihara, you are really amazing!"

Conan who solved the case was overjoyed and didn't notice Xiao Ai's strange expression at all. Just when he wanted to share his inner joy with Xiao Ai, he seemed to see a man behind Xiao Ai in a daze.

The man's figure gradually became clear from the illusion - black hair, black eyes, and a face prettier than most girls. If Conan didn't have dazzle, this man is Liu Sen.

Just as Conan was about to exclaim, Liu Senxuying behind Xiao Ai spoke first.

"Don't beat my daughter!"

Liu Sen's phantom said with strong anger, Conan who was stunned in place was pushed away by Xiao Ai.

"...Haihara, behind you..."

"My back?" Xiao Ai turned her head shyly and suspiciously, but then saw nothing.

"This is unscientific..." Conan rubbed his eyes, "This is really unscientific!"

"Who cares if your subject is scientific or not!" Xiao Ai pulled Conan up from the ground.

"Tell me what you found!"

"...I said it's not okay, the heroine, please spare me, don't shoot!"