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"What's the reason?" the boy continued.
"Both Kida Airi and Kanda Akina are classmates in Class A. If she wanted to poison Kanda Akina, it would be very easy... And! She is a member of the tennis club just like Miyamoto Sanae, and, and she is also like me..."
What Kuwai Michiko said at the end was the same as hers, referring to the fact that Kida Airi was probably suppressed by Miyamoto Sanae in the club. Although she had good abilities, she was unable to be selected in many related competitions because she was just a little bit inferior to Miyamoto Sanae.
"When I saw the letter, I had already guessed that the writer must be her. After all, she is the only one in school who can compete with Miyamoto Sanae in tennis matches..."
After finishing the interrogation of Kuwai Michiko, the boy and Kokarasuma left the Kuwai family, but did not go directly back to the Metropolitan Police Department. Instead, they changed their plans and went to the house of Kida Airi, as mentioned by Kuwai Michiko.
"Mr. Shirakawa, we have just confirmed with the school that both Class A and Class E had an outdoor physical education class at different times in the morning yesterday.
Moreover, Kida Airi from Class A and Kuwai Michiko from Class E did ask for leave to go to the teaching building during class time..." said a detective in the front passenger seat.
"How's the fingerprinting going?" the boy asked.
"We haven't completed the collection yet. It's expected to be completed by noon today, but the fingerprints of Kida Airi and Kuwai Michiko were collected yesterday..."
"Notify the forensic department and have them prioritize comparing the fingerprints of these two people with those on the lunch boxes of the two deceased persons... Also, have someone go to the school and students to inquire about the relationship between these four people."
"Yes."
At this point, the boy seemed to have suddenly realized something, turned his head to look at the little Karasuma sitting next to him, and asked:
"What is the relationship between Kida Airi and Akina-san usually like?"
These two people are classmates of Kokarasuma, so she should be familiar with them.
"Basically, we have no intersection..." Xiao Wuwan heard this and replied, "Akina is very gentle. Although she is very talented in drama performance, she has always been a little shy and is not very good at dealing with those who are very outgoing and proactive...
Kida Airi is such a person, she is good at sports, popular, and a bit carefree, so she has many friends in school... The two of them have a natural repulsion in their personalities, so they have always been just ordinary classmates... Ah, but."
At this point, Xiao Wuwan seemed to suddenly remember something and continued:
"But Kuwai Michiko and Miyamoto Sanae should have a very good relationship."
"Why do you say that?" the boy asked.
"Because when I went to the drama club to watch Akina, I often saw Miyamoto Sanae waiting for Kuwai Michiko. Although they were not in the same club, they seemed to have a good relationship. I heard that they used to go to the same junior high school..."
“Drugging your good friend…” The boy frowned slightly.
During the interrogation just now, Michiko Kuwai did not say that she and Sanae Miyamoto were good friends.
The boy realized something in an instant.
"Mr. Shirakawa, we're here."
At this moment, the police car slowly stopped in front of a private house. The words "Kida Family" were written on the doorplate next to it.
"Let's go."
He immediately opened the door and got out of the car, then the boy walked up and rang the doorbell.
who is it? ”
A somewhat timid voice came from inside the door, and then the door opened a little, and a high school girl with twin ponytails poked her head out and took a look.
"babble--"
But as soon as the high school girl saw the boy's face clearly, she felt like she had seen something extremely terrifying. She screamed and tried to close the door.
Obviously, the high school girl was Airi Kida, and she also recognized the boy as the police officer who came to the school to investigate yesterday.
"Snapped!"
The boy acted at the speed of light and held the door open at the last moment before it was closed.
"Kida-san, we have something to ask you."
The boy said through the door. Although with his strength, he could easily push the door open, he did not do so in the end. He just wanted to prevent Airi Kida from closing the door.
"No, don't! I didn't kill anyone! I didn't kill Akina-san! Don't come and arrest me!"
Behind the door, Airi Kida screamed while trying desperately to close the door.
"I've already said it, I just want to ask you something, not to take you away..." The boy sighed softly.
"But! But Akina has already..."
"Mr. Kida, I think you must have seen my name in some newspapers before, so I hope you can trust me. At least when it comes to finding the murderer, I have never made a mistake so far.
Since you said that the murderer is not you, I hope you can cooperate with us to find the real murderer as soon as possible and clear you of suspicion."
The noise inside the door gradually died down. After a while, Airi Kida slowly opened the door a little, stuck her head out, and looked at the boy outside the door with fear on her face.
"You're really not here to arrest me?"
"If the police want to arrest someone, they will not bring your classmates with them." The boy gestured to Xiao Wuwan behind him and replied with a smile.
But unlike the boy's relaxed expression, Karasuma's reaction was not so good. She folded her arms, turned her head, snorted coldly, and had a cold expression.
After all, to her, the man in front of her was undoubtedly the culprit who poisoned Akina and caused her good friend to die of the poison.
Being able to hold back and not say anything was already a great act of restraint on her part.
"Um……"
Not daring to look at Kokarasuma at all, Kida Airi quickly lowered her head and finally opened the door.
"Come in, no need to change your shoes..."
She turned around and led everyone into the house.
When the boy came in, he instinctively glanced at the shoe cabinet at the entrance and frowned slightly.
"Are you the only one living here?" he asked.
The boy noticed that although there were other indoor slippers in the shoe cabinet, they were all covered with dust, as if no one had used them for some time.
"Well, mom and dad often work away from home and rarely come back."
Taking a few people to sit in the living room, Kida Airi didn't wait for the boy to ask, but hurriedly took out a letter from the bedroom and handed it to the boy.
"That's it... The real murderer must be Kuwai Michiko. I was used by her!"
Chapter 652 Exchange of Murders
[I know that Miyamoto Sanae is your competitor. If you don't want her to participate in the regional competition this time, then make a deal with me.]
[I can't play the leading role in the Autumn Drama Festival because of Akina Kanda from your class A. If you add something to her lunch box tomorrow, I promise that I will do the same to Sanae Miyamoto.]
[What you need to add is a strong laxative that can last for 24 hours. It is not life-threatening. You can take advantage of your class's physical education class tomorrow morning to do it. The secret is to add it to a strong-flavored pickle or sauce. ]
[If you have made up your mind, then as a signal, use a marker to draw on the lid of your shoe cabinet, and I will put the laxatives in your shoe cabinet before tomorrow.]
[Don't ever contact me. If you do, our deal will be canceled immediately. Also, please get rid of this note immediately.]
At Airi Kida's home, the boy looked at the note she handed over, and there was no expression of surprise on his face.
The note was exactly the same as the one he had seen at Kuwai Michiko's house before. They were both common sticky notes that could be found in roadside stores. There was nothing special about them.
The handwriting on the note was also crooked, as if it was written with the non-dominant hand.
Even the contents were almost the same, the only difference being that Kuwai Michiko's note asked her to poison her classmate Miyamoto Sanae, while Kida Airi's note asked her to poison her classmate Kanda Akina.
Also, the former's note was written by scratching the shoe cabinet lid with a utility knife as a signal of agreement, while the latter's note was written with a marker.
Assuming that the murderer in this case is someone else, then this person is indeed very cautious. In order to prevent the two "poisoners" from becoming suspicious and investigating each other's shoe cabinets, thereby realizing that they were being used, he even deliberately used different marking methods.
"Do you accept the offer on this note?"
The boy handed the note to Kokarasuma and the two detectives beside him, then looked at the high school girl with long twin ponytails sitting opposite him and asked.
"Yes... yes." Upon hearing this, Airi Kida lowered her head, her face pale and ashamed. She stammered, "Because I wanted to participate in the regional tennis tournament... and, and I thought it was just a laxative, it wouldn't do any harm anyway, so, so... I didn't expect it to be like this..."
Hearing her words, Xiao Wuwan immediately bit his lip and stared at her.
Yesterday, when Kanda Akina died of poisoning, the scream that rang out in the class was made by Kida Airi.
Because Kida Airi really never thought that the white powder could be poison... She actually killed someone?! The person she killed was a classmate in the same class as her!
After learning that Sanae Miyamoto from Class E was also killed, Kida Airi became completely panicked. She immediately realized that she was being used.
However, since her parents were away all year round, she had no one to discuss these things with at home, so she could only hide at home in fear until the boy came to her door...
"Do you have any guess about who wrote this note?" The boy asked even though he already had a guess in his mind.
"It's Kuwai Michiko! It must be her!" When she heard the boy's question, Kida Airi shouted immediately, with an angry expression on her face and an excited tone.
"She is a member of the drama club just like Akina, and she is the only one who can compete with Akina for the leading role in the drama festival!
Only she has the motive to kill Akina-san, she must be the murderer!"
Well, even this place is the same as the previous Kuwai Road.
The moment Michiko Kuwai saw the note, she thought that the person who wrote it must be Airi Kida, and the same thing happened to Airi Kida, who immediately thought of Michiko Kuwai.
Kuwai Jiko vs. Kanda Akina, Kida Airi vs. Miyamoto Sanae.
The conflict between these two groups of people is 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 took advantage of this, took advantage of the competitiveness and vanity of the two girls, and used them to complete an "exchange killing" method.
What’s even more amazing is that in the two notes left by the murderer, he first lied that it was just a laxative, and then both indicated that “this plan was first proposed by the other party, and I just cooperated with her.”
In this way, the murderer made the two girls feel lucky that "even if the truth is exposed, I am just an accomplice", which invisibly weakened the two girls' resistance to this criminal behavior.
This may also be the reason why both Kuwai Michiko and Kida Airi kept the note.
After all, this is strong evidence that they are only "accomplices" and the real guilt does not lie with them.
To be honest, this method of crime is quite novel. It is the first time that the boy has encountered this type of case in all these years.
Of course, it's just a novelty.
Because this method also has many fatal loopholes.
First of all, before the incident, the two girls themselves did not realize that they were killing someone, so they naturally would not make any careful moves to cover up their criminal behavior, and would inevitably leave a lot of traces at the scene.
For example, fingerprints may be found on a lunch box.
Even if the two girls were careless and disposed of the note afterwards, the police could still discover the existence of the two girls based on this, and further infer that there were other masterminds in the case.
Secondly, according to the intelligence they currently have, the murderer is obviously someone who has the motive to kill both the deceased Kanda Akina and Miyamoto Sanae. As long as they can grasp this clue, they can greatly narrow down the scope of the murderer and further identify the true murderer...
"I see. Thank you for your cooperation, Kida-san."