Conan: Live in the Maori Detective Agency at the beginning

As soon as they stepped out of the door, they ran into Takagi Wataru who was hurrying over with a piece of paper tightly held in his hand.

"This is the important information that Ms. Tatsumi just asked about." Takagi Wataru said as he handed the paper to Officer Megure.

Officer Megure quickly glanced through it, then handed it to Xingchen and said, "Brother Xinye, take a look."

After reading it carefully, Xingchen smiled confidently and thought to himself: So that's how it is.

Now, he has a crucial clue. If the other party cannot give a reasonable response, then the identity of the murderer will be revealed.

"Inspector, we didn't detect any smoke reaction on Mr. Ohba." A patrolman ran over to report.

"Really?" Inspector Megure looked a little confused.

"Perhaps this is a vendetta, and the murderer may have a deep hatred for President Tatsumi." Takagi Shigeru put forward his own guess.

"Okay, then let's go and ask Miss Tatsumi and people who are closely related to her. Maybe we can find some clues from them." Officer Megure made a decision.

"Inspector Megure, there's no need to do this. I already know who the murderer is." Xingchen put his hands in his pockets and said calmly to everyone.

"Really, brother Niino?" Officer Megure looked happy.

"You just need to bring Miss Tatsumi, Mr. Ohba, and the three people who first discovered it to the elevator." Xingchen stared at everyone and said seriously: "The answer to the mystery will be revealed soon."

On the other side, in the lookout restaurant.

Kudo Shinichi was staring out the window, listening to the story told by Mao Lilan.

He was full of hesitation at this moment, afraid that Mao Lilan would reject his feelings.

"Shinichi, Shinichi."

"Huh?" Kudo Shinichi finally came to his senses and looked at Mouri Ran.

"Really? Were you listening? " Mao Lilan was speechless. It was obvious that he was absent-minded just now.

"Haha, of course I'm listening. Didn't you talk about your experience in the London theater?" Kudo Shinichi responded quickly.

Mao Lilan blinked and noticed the beads of sweat on Kudo Shinichi's forehead. She asked in confusion: "Shinichi, are you hot? Your head is all sweaty."

"Eh?" Kudo Shinichi raised his hand to wipe the sweat from his forehead, and suddenly felt a familiar feeling surge in his heart.

He seemed unable to hesitate any longer.

Haibara Ai drank the juice, tilted her head and squinted her eyes to look at Kudo Shinichi.

On the other side, the crime scene.

Next to the elevator.

When Ohba Satoru was brought in, he was still muttering, "What are you doing? Didn't you just investigate everything? Why are you still treating me as a murder suspect?"

"I've proven that I don't have any reaction to gunpowder," he protested.

"Yes, I can prove it. Mr. Ohba was with me when the crime happened." Miss Tatsumi explained again: "Of course, he did leave for a while when he changed into the mascot costume."

"But that locker room is a secret room, and there were other employees present at the time. He couldn't have escaped from it or switched with someone else," Miss Tatsumi asked back.

"So you mean I was lying to you?" She was a little unhappy.

"Calm down," Officer Megure advised.

"That's not the case, Ms. Tatsumi. I didn't doubt you. I always believed that you were inseparable from him." Xingchen walked over to them, and his figure was reflected in the mirror. He explained: "Besides, you were by his side when he committed the crime."

"Please, do you mean to say that I am his accomplice? Why should I join him in killing my father?" Miss Tatsumi demanded.

"That's not what I mean. The murder happened near you, or even right in front of you." Xingchen said with his hands in his pockets.

"What!" everyone exclaimed.

"You didn't notice it at all at that time. Because you just closed your eyes and kissed Mr. Ohba with your back to the elevator door." Xingchen began his reasoning.

After all, this is a question that requires rigorous reasoning.

"You just don't realize it at all." Xingchen added.

"What? Kissing him?" Officer Megure asked in surprise, and Miss Tatsumi next to him showed an expression of disbelief.

"That's how he hugged you, right?" Xingchen said as he stepped forward and used his arms to simulate hugging Miss Tatsumi's neck.

"Hmm..." Miss Tatsumi nodded.

"When he hugged you like this, his left hand could just cover your ears. While he kissed you, he pressed the button for the elevator next to you. The moment the elevator door opened, your father was killed." Xingchen said as he demonstrated.

Then Xingchen let go of his hand, looked at Mr. Ohba and said, "As for why your father stayed in the elevator, it was probably because Mr. Ohba told him that if he suddenly came out of the doll costume, he could scare the people at the party."

"So your father made an appointment here with Mr. Ohba, who was wearing a doll costume."

"Am I right, Mr. Ohba Satoru?" Xingchen said with a slight smile on his face.

"..."Oba Satoru's face suddenly turned gloomy, and the look he gave Xingchen was full of hostility.

"But even if he blocked her ears," Officer Megure asked with some confusion, "if he shoots with a silencer, there will be some sound when a person falls, right?"

"She might hear some weird noises, but we just need to time the shooting to coincide with the start of the party." Xingchen walked up to Ohba Satoru and said.

"When a party starts, there will be firecrackers. The person who arranges the party is Mr. Ohba. He only needs to arrange enough firecrackers to cover up the sound of gunfire."

"When the firecrackers were about to end, he loosened his hands covering your ears. This made you suspect that the previous sound was made by the firecrackers."

Xingchen added: "Also, he only let go of Miss Tatsumi's arms after confirming that the elevator door was closed."

"This way he can realize his plan." Xingchen walked around Ohba Satoru and spoke slowly. Every word hit Ohba Satoru's heart like a hammer.

"Then if I am the murderer, there should be a smoke reaction." Ooba Satoru felt a little uneasy and began to defend himself: "Look, I didn't even detect a smoke reaction."

Xingchen walked back to the elevator door and gestured, "Oh, I heard from your company's employees that you like wearing doll costumes very much, and every time you wear a doll costume, you will definitely dress up as the mascot Wink."

"We found this in the eyes of the doll costume." Officer Hei Yu showed the transparent plastic bag in his hand, which contained a black glove and a rubber band.

"And I heard that this gentleman had touched this thing before he was wearing the doll costume with you, so your fingerprints must be on it."

"But this is also the best proof that you have no reaction to gunpowder smoke." Xingchen directly explained the whole process.

"Hahaha, you said there are no my fingerprints on it. How can you be sure that this thing is mine? Maybe the murderer wanted to frame me." Ohba Satoru laughed as if he heard a joke.

"Really? I still have a key question for you to answer."

Xingchen snapped his fingers, and the surrounding lights suddenly dimmed.