In Conan, people have a brain option system

The criminal police officers at the scene were divided into two groups.

A group of people went looking for the black suitcase used to dump the body.

Another group of people went to the guest room area on the second floor to search the rooms of the three suspects and the deceased.

It's almost half past seven in the morning.

There are already many tourists waking up one after another.

In addition, the group of people who came to search the room was quite large, so many people opened the door and looked at the situation curiously.

Japanese criminal police are not like police officers in the Traffic Division. They usually do not wear police uniforms when handling cases.

However, the criminal police officers' uniformly formal attire and their completely different temperament from other tourists still allowed many tourists to identify their identities.

Misaki Itakura also opened the door and stuck her head out to check the situation.

In the morning, she vaguely heard the sound of police sirens in her sleep, and immediately woke up.

Although there is no basis for it, Misaki Itakura now subconsciously feels that the artist she is responsible for was killed as soon as she knows that a case has occurred.

She also quickly contacted Akikawa Kongsuke.

However, there was no reply.

‘I always feel like I have some neurasthenia now. When I hear the sound of the siren, I feel my heart beating fast. ’

Itakura Misaki prayed in her heart that Akikawa Kyusuke just hadn't gotten up yet.

Then I saw several people who looked like detectives standing at the door of Akikawa Kyusuke's room.

"!!!"

Itakura Misaki felt her heart suddenly sink, and then hurried out.

"Hello, may I ask what happened?"

Misaki Itakura asked the people who looked like criminal policemen who were about to enter Akikawa Kousuke's room.

"Do you know Akikawa Kyusuke?"

The detective looked over and asked.

"I am Mr. Akikawa's agent. Could it be said that Mr. Akikawa was killed again?"

"again?"

The two detectives looked at each other, confused by Itakura Misaki's statement.

What's the meaning?

Is it possible that the person who lives here is often killed?

"It's not that he was killed. Someone died. Akikawa Kyusuke is one of the suspects. We are going to search his room now.

"This is like it, great."

Itakura Misaki also breathed a sigh of relief when he heard this.

The two detectives looked at Itakura Misaki's reaction and were also confused.

What's going on, this manager lady looks relieved when she sees that her artist is suspected of being a murderer?

After Misaki Itakura thanked the two detectives, she also returned to her room.

After closing the door, she gently patted her chest, where her heart was pounding, and took a long breath.

‘It turns out he wasn’t killed, but was treated as a suspect. ’

After spending such a long time with Akikawa Kyusuke, she still has great trust in her character as an artist.

In Itakura Misaki's heart.

Akikawa Kyousuke is like a little white rabbit, innocent, cute and harmless.

Although sometimes Akikawa Kyusuke can guess other people's thoughts, which feels a bit scary.

However, Itakura Misaki believes that Akikawa Kyusuke neither knows nor has the ability to do things that harm others.

——

The other side.

Dr. Agasa, together with a group of young guys from the Junior Detective Team, and several detectives were in the room of the deceased Takeshi Furuzawa.

However, Takeshi Furusawa's room is clean inside.

I haven't seen anything that can be used to make hydrogen sulfide gas.

"The air conditioner in the room is always on, and the room card is inserted into the card power switch."

"A person only has one room card. If Takeshi Furusawa wants to leave the room, he will definitely take the room card with him."

"Of course, there is also a situation where Takeshi Furuzawa was drunk and forgot to take the room card, but judging from the indentations on the sheets, this should be the murder scene without a doubt."

Conan looked at the folds on the sheets and said to himself.

It can be clearly seen that the white sheets still have traces of someone lying on them and being dragged.

"It would be unreasonable if this was a murder scene."

Haihara Ai next to Conan spoke.

"The first thing the criminal police did when they entered the room was to detect the concentration of hydrogen sulfide in the room."

"The detection equipment did not pop up any values, which shows that the concentration of hydrogen sulfide in the air in the room is so low that it cannot be detected at all."

"And the windows in the room were not opened, and the ventilation system was also not turned on."

"If the murderer used hydrogen sulfide gas to kill Takeshi Furusawa here, how could there not be even a trace of hydrogen sulfide detectable in the room?"

At this time, the police also searched Furuzawa Kenshi's personal belongings and everything in the room.

"It seems like we didn't find anything suspicious here."

"Excuse me, is it possible to make hydrogen sulfide gas using existing items in the room?"

A criminal policeman came forward and asked Dr. Ali.

"impossible!"

Dr. A Li was about to speak, but Haihara Ai answered the detective's question first.

"Hydrogen sulfide is definitely not a gas that can be easily produced using common things in daily life."

"Otherwise, anyone can easily kill someone with hydrogen sulfide."

When the detective saw that the person who answered his question turned out to be a little loli who looked to be only 7-8 years old, he also showed a very surprised expression.

What amazed them even more was.

Next to this little lolita with short brown hair, the little boy wearing round-rimmed glasses actually said something quite astonishing:

"Is it difficult to make hydrogen sulfide? Isn't it easy to make it by just using something containing sulfide and reacting it with acid?"

"I remember that some shampoos and shower gels contain sulfide ingredients, right? For example, selenium sulfide."

Conan asked doubtfully.

Selenium sulfide, which has antifungal and sebum-regulating effects, is usually added to anti-dandruff shampoos.

Conan speculated that perhaps the murderer used shampoo to produce hydrogen sulfide.

However, his speculation was quickly denied by Huihara Ai.

"No, first of all, the chemical properties of selenium sulfide are relatively stable, and the possibility of it reacting with acid to generate hydrogen sulfide is very low."

"Secondly, the concentration of selenium sulfide in conventional shampoo is very low. Even if it is used to produce hydrogen sulfide gas, the concentration is not enough to kill people."

As the developer of the second-generation APTX-4869 drug, Ai Haihara has a wealth of relevant knowledge in pharmacology, toxicology, and biochemistry.

Because of this, she was able to determine from the concentration of hydrogen sulfide in the air at the scene that it was a homicide.

Similarly, this room was a murder scene, but there was no trace of hydrogen sulfide left in the air, which made Haihara Ai feel something was very wrong.

Hearing this, Conan once again showed a thoughtful expression.

"In this way, there are two doubts about this case."

“How on earth was the murderer’s hydrogen sulfide made?”

"And how did he do it so that there was no trace of hydrogen sulfide left in the air at the crime scene?"

Just when Conan was confused, he suddenly heard the excited voice of Moto Kojima:

"Wow——! Look, it's Masked Superman's hood!"