"Edogawa Conan?"

"Yes, didn't you tell me before, did you have something to do to go to Rice Flower Town? He lives in the detective office nearby. ”

"Although he is a child, he is surprisingly mature."

"Don't talk about this, sister, how are you doing?"

"Of course I'm fine! It's you, I'm worried about you, don't keep tinkering with any medicine! It's important to find a boyfriend quickly, so I don't have anything to worry about~"

Looking at Conan's calm thinking, Gray Yuan remembered the last time he saw his sister...... She also specifically mentioned the name Conan.

I think about it even more, when the news reported the death of my sister, a boy wearing glasses stood next to his sister's body......

Gray Yuan frowned and walked over to Conan, who was thinking.

If Conan is really Shinichi Kudo, if Shinichi Kudo is really as powerful as rumored, why didn't he save her sister.........

"It's useless."

Ashbara interrupted Conan, who was watching Zoro and Katayama tinkering with tapes.

"It's impossible to put the key under a notebook in a closed room, even if it's a cassette tape from a telephone tape, and although there are a lot of unreasonable messages, it's impossible for Professor Hirota, who was so drunk, to fall down with the bookshelf and die with a shot in the back of the head."

"This case has already been taken care of by the general."

Gray Yuan picked up the chess piece next to him and put it heavily on the landline, leaving Conan alone to ponder.

"General?"

Conan picked up the knight's chess piece, and a flash of light flashed through the back of his head.

"I know, the truth of the case!"

Conan stood up confidently and looked at the gray plain, who was about to leave.

"Look, well, in this world, there is absolutely no case that cannot be solved!"

In Gray Yuan's eyes, Conan's short figure at this time gradually coincided with the tall and confident Kudo Shinichi......... She was stunned for a moment.

…………

"I'm sorry, Officer Henggou, I'll take care of the cat next time! You too, hurry up and apologize to others! ”

Because he touched the tape without gloves, it was somewhat suspected of destroying the evidence, and Katayama immediately took Zorro and the police to apologize.

This matter can be big or small, and if you don't want to pursue it, it's just a matter of obstructing official business.

"Okay, since the case was an accident, I guess we can go back, right?"

"yes, I have an urgent matter tomorrow morning."

Seeing that the case has not progressed for a long time, Mr. Hosoya, Mr. Morioka and Mr. Shirakura also don't want to stay here for a long time, so they are a little unhappy to be interrogated as suspects.

"You all stand for me, don't go!"

Katayama's voice suddenly appeared, causing everyone present to be stunned for a moment, and then the three suspects also stopped and looked at Katayama.

"Ah......h I ......"

Before Katayama could say a second sentence, he felt a needle pierce the back of his head.

And then...... There was no then, and he didn't feel anything else at all......

"Shinichi! I have already injected Mr. Katayama with anesthetic today, and now he is still in the anti-drug period, and the anesthetic needle is useless! ”

"Damn, why didn't you say it earlier!"

Conan panicked all of a sudden, good guy, he also deliberately stopped everyone in Katayama's voice, which was embarrassing.

"Because, the murderer of this case is between you!"

Katayama, who was watched by everyone, had no choice, seeing that Conan didn't say the next sentence for a long time, he could only say it instead of Conan, he couldn't say "Oh, it's okay, the child is not sensible, he is screaming and playing." ”

He doesn't have such an innocent temperament.

Then, he winked at Conan, signaling that he was okay and could cooperate.

"I already know who committed this case, and the methods he used!"

Following Conan's words, Katayama lip-to-lip as much as he could, and then forced his composure to lift his collar.

The main reason is that he doesn't dare to look at these people, he doesn't know who they are.

"However, no matter how you look at this case, it is an accident."

Morioka said puzzled.

"Hmph, you're so naïve, sure enough, a layman is a layman......"

Conan actually mocked in his voice...... In order to match this sentence, he even stretched out his index finger to support his forehead, pretending to know very well.

"This case does look like an accident, but the murderer only needs to use the tape and chess pieces to create the so-called secret room!"

"What!?"

Seeing Katayama look so confident, including Officer Yokogou, they were all speechless in surprise.

"Look, I'll let Conan show you."

Katayama snapped his fingers in cooperation, and Conan immediately ran out from behind him.

"Uncle, can you lend me a mobile phone?"

Conan leans up to a police officer, who knows that the Doctor doesn't have a mobile phone, and Katayama only has a small display that he doesn't know what to do.

The police officer glanced at the ditch and got an affirmative look before handing the phone to Conan.

"Meow~"

Zorro handed Conan a tape in his mouth, and since he couldn't use it as evidence, he dug out a spare blank tape at the professor's house for a demonstration.

"Okay, first pull the bag out of the tape to a certain length......"

Conan pulled the tape out in a long stretch and stuck it with the cover on the landline, straightening it out and jamming it outside.

Then he pulled the extra part out of the door.

Thread the strap through the key, leave the key outside, and pull the other end of the strap into the door.

Arrange the three chess pieces in a triangular formation and clip the notebook to it.

"I see, I want to use the tape to pull the Western chess pieces and make the notebook fall down, but unfortunately, this is just a theory, because the Western chess pieces are stronger than you think."

"Of course it's not a theory, because he's going to use the other side of chess."

Katayama interrupted Ashbara because while Ashbara was speaking, Zoro had already gotten there and turned the chess pieces upside down.

This is a chess pawn, with a round head and a flat bottom, with three round heads against the ground, and the notebook is pressed on top to achieve basic stability.

At this time, close the door, turn on the mobile phone outside, and turn on the recording function on the answering machine, you can .........

"The tape will kick in, pull the strap on the outside, and pull the key in."

"Then, the key passes through the bottom of the notebook, the tape pushes the pieces over, the notebook falls and holds the key down, and the tape is all pulled back to the tape."

By the time Conan finished doing this, Katayama had already seen the technique, and in line with the principle of doing everything in the play, he explained the technique as a narrator.