After copying the sender's name on the paper, the two left Nanami's house without any lingering feelings.

The two of them did not look for Yamada Masayo again. After all, there was no point in looking for each other again.

During this morning's investigation, I felt that I gained a lot of information and learned about the various secrets hidden behind each of the ladies.

But these secrets are more like personal gossip and are of little help to the case.

So the two of them returned to the office, intending to organize and investigate the information they had obtained so far.

"I found the mailer you asked me to check."

Nanatsuki Koshimizu came over to Karasawa, who was sitting in front of the computer, with the information in her hand and said, "The sender, Eita Arimura, owns a gallery owned by a relative of the principal of Keimei Elementary School."

"If that's the routine."

Tang Ze raised his head upon hearing this and said, "Buy a cheap painting at an absurdly high price, and then take the inflated portion as a bribe.

This is a typical backdoor admission tactic."

"It seems that the price of the painting also surprised Ms. Hiroko."

Nanatsuki Koshimizu said, "If he sees the value of that painting like I do, perhaps by linking it to Eita's admission, he can also discover the backdoor."

"This possibility is very high." Tang Ze nodded.

"Then there's a motive for murder."

Koshimizu Nanatsuki pondered and said, “We can confirm Madam Yuanxiang’s alibi.

It seems that just as Masayo-san said, it was either Lily-san or Nanami-san who killed Mitsuko-san."

But after Koshimizu Nanatsuki finished her reasoning, she received no response. She looked at Tang Ze, who was concentrating on his computer again, and said unhappily, "What are you looking at? You're so engrossed that you don't even listen to me."

"The same thing as this."

Tang Ze took the green nut behind him without looking back, and continued to browse the web with his right hand.

"Hey, isn't that it?"

Looking at the object revealed after the webpage refreshed, Nanatsuki Koshimizu compared it with the nut in her hand and said, "What a coincidence! It seems I'm really lucky that you found it right away."

Nanatsuki Koshimizu shamelessly took all the credit for herself. Tang Ze rolled his eyes but was too lazy to argue with her.

Then Tang Ze looked at the description of the product and found that it was an acceleration nut for skateboards.

"Skateboarding, it seems I need to go there tonight."

After reading the product introduction, Tang Ze recalled the stairs he had taken before and found that it was indeed a good place to skateboard.

The stairs are high enough and there is a platform in the middle as a buffer. In addition, there is a downhill slope in the middle of the stairs, which skateboarders will probably like.

They usually have a fixed place to skateboard, so as long as the weather is good, you will probably be able to see them at night.

The two ended up having dinner early and eventually ran into a few young people skateboarding on the stairs.

The next day, the two visited Yamada Masayo again and told her the results of their investigation.

"You're saying that Miss Hiroko didn't fall down the park steps last Wednesday?"

Hearing Tang Ze's words, Yamada Masayo said in disbelief: "How is that possible?"

"Actually, there was a group of people practicing skateboarding on the steps of the park that night."

Nanatsuki Koshimizu said, "That means if someone fell, someone would definitely have seen your situation."

"That means Miss Guangzi wasn't pushed down the stairs." Tang Ze looked at Yamada Masayo calmly and said, "That means you lied to us before. Please tell me why you lied."

“This, this is…”

Although Tang Ze's tone was flat, Yamada Masayo, who had seen Tang Ze's sharp insight, felt extremely depressed in the silence.

Seeing the other party remain silent, Nanatsuki Koshimizu pointed at the photos and said, "Look carefully at these photos on the wall. Between the time Ms. Guangzi left and the time you received the text message, there was a blank period when you were not photographed.

Could it be that you approached us and did these things in order to divert attention and avoid suspicion?"

"No!" Yamada Masayo denied it with an excited look on her face.

"But it is undeniable that in these photos you put up, your blank time is longer than anyone else's." Koshimizu Nanatsuki looked at Yamada Masayo indifferently.

"That is..." Yamada Masayo opened her mouth hesitantly, but no words came out.

"I guess so."

At this moment, Tang Ze spoke up: "The reason you weren't caught on camera is because you were taking pictures of everyone else's cameras, isn't that right?"

Tang Ze came to the photo wall and said: "The photos you posted on the wall are all taken by various cameras.

There are also obvious differences in the images taken by compact cameras, SLR cameras, and mobile phones. "

At this point, Tang Ze walked towards the 1:25 column: "For example, this is a photo of you. You said that it was taken by Mrs. Yuanxiang with her camera, right?

But in fact, the other photos taken by Mrs. Yuanxiang's camera only showed Mrs. Yuanxiang and other people, but not you at all.

In addition, the same goes for Mrs. Lily and Mrs. Nanami's cameras.

In other words, it’s you who actually took these photos, just with a different camera.”

Looking at Yamada Masayo, who was pursing her lips and looking aggrieved, Tang Ze said calmly, "Or perhaps this is more accurate.

Actually, they asked you to take these photos, right? "

"Come to think of it, I remember you were in charge of collecting the trash, right?" Koshimizu Nanatsuki continued to rub salt into the other person's wounds: "Could it be that you were ostracized and bullied?"

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