At almost the same time in one day, there were two poisoning murders at Kokarasuma's high school.

One of the deceased was Kokarasuma's classmate and friend Akina Kanda at school, and the other was Sanae Miyamoto from another class in the same grade.

The two deceased were poisoned in exactly the same way, both of them were poisoned with aconitum ground into powder in their respective lunch boxes.

Considering the special lunch system of this high school, the difficulty of this continuous poisoning is undoubtedly quite high.

The boy was already mentally prepared for another difficult case, but what he didn't expect was that just the next day, this case would be solved?

Just the next morning, the Metropolitan Police Department received a phone call from a man who had surrendered himself, and the middle-aged man on the other end of the phone indicated that his daughter was one of the prisoners who had poisoned the two female students.

The boy in charge of the case rejected a middle-aged man's offer to bring his daughter to the Metropolitan Police Department for interrogation, and instead offered to visit him.

There is no other reason, he promised Xiao Karasuma yesterday to let her investigate together this time, if the suspect is allowed to come to the Metropolitan Police Department for interrogation, according to the rules and regulations, Xiao Karasuma cannot participate in it, but if he visits him personally, it can be circumvented to a certain extent.

"Luzi, no matter what, you have to make it clear to the police officer, don't hide it, and strive for leniency, understand?"

In the living room of the house, a middle-aged couple temporarily avoided going to the bedroom after leaving this sentence.

At this time, on the sofa in the living room, opposite the boy, Karasuma, and the two accompanying criminal policemen, there was a female high school student wearing a school uniform.

The female high school student has long slightly curly hair and looks good, but her face is pale and she keeps her head down, as if she is afraid to look at the few people sitting opposite.

"What's your name?" The boy asked, and behind him, a detective opened the notebook in his hand.

“…… Michiko Wakai is a student in Class E of the second grade......" The female high school student replied quietly.

Class E is the class where Sanae Miyamoto, the second deceased yesterday, is in class, while Akina Kanda and Kokarsuma are Class A.

"Your father said that you poisoned Miyamoto-san's lunch box?"

"Yes...... No, it's not! Wai Luzi nodded subconsciously, but immediately shook his head violently, and shouted with some excitement:

"I—I didn't know it was poison! I thought, I thought it was just a laxative! ”

Her words made the boy keenly aware of the anomaly.

"Let's tell me everything you went through."

"Yes...... Be! Kuwai Luzi, who was already like a frightened bird, nodded again and again, and then said:

"It started the day before yesterday, when I entered the school building that morning to change my shoes, I found that someone had stuffed a letter into my indoor shoes, and the words on the envelope were ugly, and the addressee was my ......"

Saying this, Kukai Luzi hurriedly took out a folded letter from his body and handed it to the boy.

The boy took it, and the words were indeed ugly and crooked, as if the letter writer had deliberately written them by a non-dominant hand.

As for the content of the letter......

[I know that Akina Kanda of Class A is your competitor, so if you don't want her to be selected for this Autumn Drama Festival again tomorrow, come and make a deal with me.] 】

[I'm having trouble running for the next regional tennis tournament because of your Sanae Miyamoto in Class E, so as long as you add something to Sanae Miyamoto's bento tomorrow, I promise that I'll do the same to Akina Kanda.] 】

[What you want to add is a powerful laxative that can last 24 hours, and it will not be life-threatening, you can take advantage of your E-class tomorrow morning's physical education class, and pay attention to adding it to the sauce as much as possible, otherwise you will be detected. 】

[If you have this idea, then as a code, use your utility knife to make a vertical mark on the lid of your shoe cabinet, and I will put the laxative in your shoe cabinet by tomorrow.] 】

[Never try to contact me, once you do, the transaction between us will be permanently cancelled, and besides, remember to deal with this note.] 】

After reading the crookedly written letter, the boy handed it to Kokarasuma and the two detectives beside him, and after a brief moment of contemplation, he asked:

"What is the situation of the Autumn Drama Festival and the Regional Tennis Tournament in the letter?"

"Both of these are tournaments that our school often participates in, because Akina Kanda in Class A is very powerful, so she is the heroine of every drama festival, and the main force of the regional tennis tournament has always been Sanae Miyamoto in Class E......"

"Is the candidate predetermined?"

"No, it's not! But it's actually about ......" Hearing this, Kusai Luzi lowered his head and said: "Because they are very powerful, everyone will vote for them every time they are candidates, and others have no chance at all, so in fact, it is no different from Neiding......"

"Were the candidates for both events scheduled for yesterday?"

"Well, it was supposed to be ...... yesterday."

Then both were poisoned.

"You're also from the drama club?"

"Hmm...... But as long as there is a drama program in which Kanda Akina participates, I can only serve as the second female ......"

If what Kuwai Luzi said is true, and the letter with crooked handwriting is also true, then the current situation is already clear.

The two deceased who were poisoned yesterday suffered the envy of other classmates because of their superior abilities.

Among them, Akuna Kanda of Class A corresponds to Michiko Kuwai of Class E.

According to Michiko Kuboi, the heroine of this year's Autumn Drama Festival must also be Akina Kanda, which makes Michiko Kuwai, who is also a member of the Drama Club but has always been worse than Akina Kanda, quite jealous.

So, when the mysterious letter appeared in her shoe closet, Mitsuko Kukai was moved.

After all, according to the description in the letter, this is not a bad thing, just some laxatives that will make people diarrhea and make it impossible for them to participate in the selection of the next day, and they are not poisons that will kill people......

According to the letter, as long as Miyamoto Sanae, who was in the same class, was given laxatives, the person who wrote the letter would do the same to her opponent Kanda Akina.

But what Kusai Luzi didn't expect at all was that the person who wrote the letter lied to her, it was not a laxative at all, but an aconitum powder that could kill people.

Therefore, Sanae Miyamoto, who was "forced to kill", panicked, and was seen by her parents after returning home yesterday, and after some questioning, her parents called the police to report the incident......

(˙ー˙)

(End of chapter)