As Aya says, I couldn't expect anything special. The letter was mostly concerned about my sister. The importance of the sister to the sister can be seen throughout the letter. Apart from worries and short stories about my sister, only a few stories about my daily life appeared. Of course, the important thing here is just this little story that appears every day. Aya was still reading the book, as if she was bloody and biting into the letter. I decided to focus on the letter again.

I have a little time for beauty, so I am writing again today. It's inconvenient for employers to use mobile phones because it's banned, but I'm rather happy because I like to write letters. ····························· From the beginning to the middle part, most worries and short stories for my sister. All the letters were like this. Only the last part of this letter was different. For the first time, a story about a colleague came out. The content was like this.

Not long ago, a new child called Hashizaki came in. You're close to your age. When I look at her, she remembers you and takes care of her. She's a cheerful and cheerful child and often talks, but that makes me miss me more. That's it for today. I'm going to work. I will study hard. Take care. So, goodbye. Than my sister.

After dozens of letters, one of the suspects finally appeared. The name that appeared is Hashizaki. Speaking of which, the survey report did have such content.

[Originally, the dead Aya was in charge of cleaning the mansion, but it became clear that Hashizaki was replaced instead because he was not feeling well. ]

What is this strange catch? Aya's older sister, who can be read in the letter, was a person with sincerity. Naturally, he had a strong sense of responsibility. Such a person doesn't seem to be able to easily change jobs because of illness. There must be something deliberate behind the alternation. Somehow Hashizaki seemed suspicious. Of course, the alibi in Hashizaki was certain. Many were witnessing her being in the canteen, especially when her sister died. I still don't know. So, for the time being, I decided to give out the letter I was reading and ask.

"Remember when this letter arrived?"

Aya read my letter and thought a bit.

"Oh, I think this was about three years after my sister started working. I remember I was 18 years old. What happened? Did you understand?" The name of one of them came out. "

When I pointed to the last part, Aya opened her mouth, reading it and remembering something.

"Ah, Mr. Hashizaki? This person's story was often mentioned in letters. Well, I heard that he had become a friend who shared some secrets, but what was it?" "Yes, I can't remember it right now ... but surely ..." "Is it the content written in the letter?" "Yes. Since the letters are kept in the order they came, maybe from the next letter around I think it will come out. "

Aya pushed through the pile of letters in front of me and took half.

"Surely it should be here. I think it's better to analyze from here."

After I nodded, Aya began to read her chosen letter. It has been five years since the woman named Hashizaki started working.

Like every letter, every single word was made up of concern for my sister. I sent so many letters, but my worries and whims remained the same. This was almost the level of a parent rather than an older sister. Of course, he would have taken care of himself as a child from a young age, with only one relative who divided his blood in this world, so the contents of Aya's older sister's letter would also be convinced.

Anyway, as Aya said, Hashizaki appeared again in the last part of the next letter.

... Hashizaki, whom I often talk about recently, sometimes seems like a different person. Sometimes the atmosphere seems to be different. Sometimes I talk, but sometimes I don't remember. Have you forgotten that you're still young but forgetful? … The discomfort that had been displeased here reached the peak. There is nothing clearly inspiring, but it gets stuck. I feel unnatural in some places. I can't say where it's unnatural, but I'm not convinced. I thought, maybe, this letter was also colorful.

"Please read this too. What do you think?" "Oh, when I saw this, I remembered, because it was five years ago, I do not remember clearly, but after that, certainly, similar content many times My sister knew something secret, but I said she was trustworthy and said she was asked to keep her secret. , I remembered that I was talking on the phone for a quick glance, as I had to ask for help, until now. ”“ Yes? ”“ Do you understand something? But it seems to have something to do with the case, but at that time my sister didn't want to talk too much, and I didn't tell me when I heard it, so I don't know the details. Anything about that I didn't mention it, and if I knew this would have happened I should have heard it ... "

Aya struck the floor with a fist, feeling angry. And I held my head with both hands. If so, there is certainly a clue in Hashizaki. In other words, Hashizaki is related to the mastermind. Judging from the content of the previous letters, Hashizaki was very likely to be the culprit. The secret that I knew and the cleaning staff who suddenly changed. It must not be accidental. However, the alibi was alive. So, despite the sky in the world, did you bother trying to bury the case? Anyway, if you want to take revenge on the culprit who killed Aya's sister, you'll have to move Kuzora. That means she has to convince her. To do this, you must of course have evidence. If there is evidence, Kuzora will be a police officer or a guard, and will move and sanction the culprit.

"Is there anything else that comes to mind?" "Yes. I haven't talked about him since then."

Aya was depressed, holding her body against the wall, and began thinking seriously again. I arranged the letter, hoping that Aya somehow came to mind. One thing I can say for sure is that the mastermind aimed at Aya's bag to dispose of the letter mentioned by Hashizaki. And she was poisoned, just as she is now, for fear of thinking of something.

Aya planted, manipulated and monitored her revenge on Kuzoku. Perhaps Aya wanted to be killed by Kuzuka rather than killing Kuzuki. But things have changed. Kuzora did not kill Aya. Perhaps you did not dream that this would happen. Kuzora won't kill anyone who attacks him. No one must have expected it. Aya is the safest now in the house in Kuzora. The condition of Kuzora to leave Japan and go abroad is rather profitable. Yes, once Aya leaves abroad, the black curtain will not be easy to find in the future. Aya becomes safe. Anyway, there is still an important puzzle. It is an alibi. Without solving the alibi, my imagination is just a delusion.

"Ah! Speaking of which, I had a conversation like this before Oita called that I knew the secret."

Aya was trying to remember something for a while, and finally opened her mouth.

"I was asking you, but you said I refused. I couldn't take it because it was a nuisance to the young lady. He said he couldn't do that before he started working. "

If that were the case, the mastermind would be that person. Someone who was like that dandy gentleman. I was going to train to use it, but when I heard what Ayano's older sister said, I switched to Hashizaki and infiltrated him. What was Aya's older sister asked to do? And it seems that there are some circumstances in which he refused. For example, did you know what you did well to use it?

"Did you hear that, but didn't you suspect anything about the mastermind?" "Yes, because my sister didn't say anything after that."