[I know Sanae Miyamoto is your rival, so if you don't want her to compete in the regional tournament this time, come and make a deal with me.] 】

[I'm having a hard time playing the heroine of the Autumn Drama Festival because of your A-class Kanda Akina, as long as you add something to her lunch tomorrow, I'll promise that I'll do the same to Sanae Miyamoto.] 】

[To add a powerful laxative that lasts for 24 hours, it will not be life-threatening, you can start with your class's physical education class tomorrow morning, and the secret is to add it to a richly flavored pickle or sauce.] 】

[If you make up your mind, then as a code, draw the lid of the shoe cabinet with a marker, and I will put the laxative in your shoe cabinet by tomorrow.] 】

[Never come and contact me, once you do, our transaction will be cancelled on the spot, and in addition, please dispose of this note immediately.] 】

At Kida Ellie's house, the boy looked at the note she handed over, and there was no surprise on his face.

The note was exactly the same as the one he had seen at Luzi Kuai's house before, it was a sticky note paper that could be seen everywhere in the roadside store, and there was nothing special about it.

The handwriting on the note was also crooked, as if it had been written by a non-dominant hand.

Even the content is almost identical, the only difference is that Miyamoto Sanae's note asks her to poison her classmate, while Kida Ellie's note asks her to poison Kanda Akina, who is in the same class.

Also, the former's note is a sign of agreement by scratching the lid of the shoe cabinet with a utility knife, while the latter is using a marker.

Assuming that the murderer in this case is someone else, then this person is indeed quite cautious, in order to prevent the two "poisoners" from becoming suspicious, to investigate each other's shoe cabinets, so as to realize that they are being taken advantage of, and even deliberately use different ways of marking.

"You accepted the offer on this note?"

Handing the note in his hand to Kokarasuma and the two detectives beside him, the boy looked at the female high school student with a long ponytail sitting across from him and asked.

"Yes...... Yes. Hearing this, Kida Ellie lowered her head, her face turned pale and she looked ashamed, and she stammered back, "Because I want to go to a regional tennis tournament...... And、And I thought it was just a laxative, and it wouldn't hurt anyway, so、That's it...... I didn't expect it to be like this......"

Hearing her words, Kokumara immediately bit his lip and stared at her with his eyes.

Yesterday, when Kanda Akina was poisoned and died, the scream that sounded in the class was made by Kida Ellie.

Because Kida Ellie, she really never thought that the white powder would be poison...... She actually killed someone?! It's still the same classmate who killed him!

And after learning that Sanae Miyamoto of Class E was also killed, Kida Ellie was even more panicked, and she immediately realized that she was being used.

However, because her parents were away all the year round, she was alone at home and had no one to discuss these matters, so she could only hide at home alone and be frightened until the boy came to the door......

"Do you have a guess about the person who wrote this note?" Although he already had a guess in his heart, the boy asked anyway.

"It's a Wakai road! It had to be her! Hearing the boy's inquiry, Kida Ellie immediately shouted, her face with a resentful expression and her tone quite excited.

"She is a member of the drama club like Qiuna-san, and she is the only one who has always been able to compete with Qiuna-san for the heroine of the drama festival!

Only she has the motive to kill Akina-san, and the murderer must be her! ”

Well, even this place is the same as the previous one.

The moment Michiko Kuwai saw the note, she thought that the person who wrote the note must be Aili Kida, and Aili Kida was the same, and she thought of Michiko Kuwai in an instant.

Michiko Kuwai vs. Akina Kanda, and Kida Airi vs. Sanae Miyamoto.

The contradictions between these two groups of people are well known, but those who are motivated are not in the same class, and those who are in the same class are not motivated.

So, someone cleverly relied on this, took advantage of the competition and vanity of the two girls, and borrowed their hands to complete a "exchange killing" method.

What's even worse is that in the two notes left by the murderer, he first deceived that it was just a laxative, and then both indicated that "this plan was proposed by the other party first, and I just cooperated with her".

In this way, the murderer made the two girls have a fluke mentality in their hearts, "Even if the matter is exposed, I am just an accomplice", thus invisibly weakening the resistance of the two girls to this crime.

This may also be the reason why Michiko Kukai and Ellie Kida both agree and keep the note.

After all, this is strong evidence that proves that they are only "accomplices" and that the real culpability lies not in themselves.

To be honest, this criminal method is quite innovative, and it is the first time that the boy has encountered this type of case in all these years.

Of course, it's just new.

Because there are also a lot of fatal flaws in this method.

First of all, before the incident, the two girls themselves did not realize that they were killing people, so naturally they would not do anything to cover up their criminal behavior, and they would inevitably leave a lot of traces at the scene.

For example, the fingerprints that may be present on a bento box.

Even if the two girls were so heartfelt that they disposed of the note afterwards, the police could have discovered the existence of the two girls based on this, so as to further speculate that there were other masterminds behind the case.

Secondly, according to the analysis of the information they currently have, the murderer is obviously a person who has the motive to kill both the deceased Kanda Akina and Sanae Miyamoto......

"Understood, thank you Kida-san, for your cooperation."

Already having an idea in his mind, the boy got up, smiled at Kida Elly, and left with Karasuma and the two detectives.

Back in the police car outside, as soon as the boy sat down, he said to the criminal police officer in the front row:

"Investigate the source of the aconitum powder in the bento boxes of the two deceased."

According to the police's previous laboratory tests, the murderer did not use the branches and leaves of Aconitum aconitum randomly collected on the side of the roadside mountain, but the lateral roots of Aconitum aconitum were dried like specimens, and then the powder obtained by grinding them.

This kind of drying is difficult for ordinary people to do, and if you look closely into the source, you may be able to find some clues.

"Yes."

"Hmm, Wood Man, the ......"

As soon as the criminal policeman nodded, the little Karasuma who was sitting next to him suddenly spoke.

"The aconitum powder used by the murderer, I think I probably know where I got it......"

(˙ー˙)

(End of chapter)