"Hydrogen peroxide?"

Listening to Cheng Shi's words, Shu Yunwen still didn't understand what it meant: "...... How could she wash away her sins with hydrogen peroxide?"

"Uh......" In the bathroom of the treatment room, Chengshi was a little speechless, and immediately replied, "...... Hydrogen peroxide can destroy the DNA in the blood and affect the identification results, you don't even know this?"

Affect DNA Identification Results?

Shu Yunwen was stunned for a moment, and finally understood what Chengshi meant-

The evidence he has now found that is enough to prove that Izumi Sano is the murderer, is the blood stains on the soles of Izumi Sano's skating shoes. If Izumi Sano destroys the DNA of her blood with hydrogen peroxide, they won't be able to prove that the blood on the soles of Izumi Sano is the blood of the victim Chihiro Itami, and she might be able to get away with it......

Shu Yunwen's mind turned, and he immediately ordered in his mind: "...... Chengshi, no matter what method you use to stop her from cleaning the blood stains on her shoes, I will go over immediately!"

"Okay, Yoon-sama!"

Chengshi responded, and Tsukamoto Shumei also noticed Shu Yunwen's abnormality, turned his head to look at Shu Yunwen and said, "...... Yun Wenjun, what's wrong? Did something happen?"

"Well, it's nothing, it's just that Cheng Shi suddenly told me just now that the murderer wanted to destroy ......the evidence," Shu Yunwen replied casually.

"Murderer, destroying evidence?" Tsukamoto Shumi was stunned for a moment, and then immediately said, "...... You just told me that the murderer is Miss Izumi Sano, right? Really, Yun Wenjun, you knew who the murderer was before, but you didn't tell the police quickly, you had to accompany me to watch the fireworks...... What if the killer really destroys the evidence?"

Tsukamoto's beautiful words fell, and Shu Yunwen immediately said with a smile: "...... It's okay! Anyway, the murderer can't run away, Youchengshi stares at her, and she can't even destroy the evidence...... Besides, no matter how important the case is, it's not as important as watching fireworks with you......"

"Hmm......" Tsukamoto Shumi listened to Shu Yunwen's words, her face couldn't help but turn a little red, and she looked down at Loriai, who was still watching the fireworks, "...... I hate it, Yun Wenjun, Xiao Ai is still there......"

When Lori heard this, she glanced at Shu Yunwen and Tsukamoto Shumei with slanted eyes, and the corners of her mouth twitched twice-

In other words, do you mean to remind us that we should go farther?

Also, your pair of loving dogs have been showing all kinds of shows in front of us since just now, and there is no end to it?

Loria glanced up at the fireworks that exploded in the air - well, I really wanted to tie these two goods to the fireworks and shoot them into the sky to stand shoulder to shoulder with the sun......

Lori was unhappy for a while, turned around, and walked in the direction of the skating rink hall: "...... Sorry, you two can continue watching the fireworks, I'll go inside the hall and take a break. ”

"Hmm...... Then let's go together!" Shumi Tsukamoto stretched out her hand and pulled Shu Yunwen, "...... Yun Wenjun, let's stop watching the fireworks, let's tell the murderer to the police quickly!"

"Okay. Shu Yunwen nodded, and then looked at Gray Yuan Dao curiously, "...... By the way, Gray Plains, can hydrogen peroxide destroy the DNA in the blood?"

Gray Yuan let out a "hmm" and then explained, "...... Hydrogen peroxide is a liquid that can alkylate nucleic acids and protein nucleophilic groups, such as sulfhydryl groups, carboxyl groups, hydroxyl groups, amino groups, phosphate groups, and heterocyclic nitrogen atoms, which can directly damage the DNA template and affect the DNA identification results...... You understand what I'm saying, right?"

When Shu Yunwen heard this, he had a black line in his head-

Damn, we know that you said a bunch of "bases", who can understand them?

Sure enough, Loriai, you are also a scientific dog who only knows how to show superiority!~

......

In the toilet of the examination room.

After Izumi Sano locked the door of the bathroom, he stood in front of the mirror, quickly took off the bloodstained skate, landed on one foot, looked at the blood stains on the skate blade on the soles, and a sneer appeared at the corner of his mouth, with a low voice and a hideous expression:

“...... I really didn't expect that there would be blood stains on my shoes, but fortunately, I found it early...... Damn Chihiro and Oda, it's all because of the two of them, Narita will die......"

As he spoke, Izumi Sano picked up a cotton ball, unscrewed the bottle containing hydrogen peroxide, and was about to stain it with hydrogen peroxide to clean the blood stains on his shoes, but found that the bottle containing hydrogen peroxide seemed to have been hit by something, and rolled directly into the sink, and the liquid slowly flowed into the drain......

Seeing this scene, Izumi Sano's movements froze, and he looked around in panic: "...... What's going on?"

Izumi Sano felt a little hairy on his body, looked at the remaining hydrogen peroxide in the pool, gritted his teeth, and actually sealed the drain, then picked up a cotton ball and soaked it in the pool - looking at her appearance, it seemed that she was going to wash off the bloodstains.

Chengshi floated beside her, helplessly reached out and gently patted Izumi Sano on the shoulder twice.

Feeling the force from her shoulders, Izumi Sano screamed "Ah", then stumbled on her feet, and she could no longer maintain her balance on one foot, her body fell to the side, her head hit the wall, and she fainted.

Chengshi was stunned when he saw this, and hurriedly approached Izumi Sano to take a closer look, and then was speechless-

Anyway, we really want to stop you from cleaning the bloodstains, why did you faint?

Narumi was speechless, when there was a knock on the door outside the bathroom, followed by Wataru Takagi's voice: "Hey, Miss Sano, what's wrong with you?" We seem to have heard your screams outside just now...... Are you alright? I'm sorry, but I let the nurse in and have a look......."

Takagi waded into the room, and the nurse walked into the bathroom, and then saw Izumi Sano lying on the ground, and quickly screamed.

Hearing the nurse's voice, Takagi hurriedly walked in, and then helped Izumi Sano out with the nurse.

As for Chengshi, he honestly reported to Shu Yunwen: "...... I'm sorry, Yoon-sama, but I had an accident here...... Izumi Sano fainted!~"

"What?, fainted?" Shu Yunwen was stunned for a moment at the door of the skating rink hall, "...... Are you scared?"

"No! she fell on her own!"

......

In the women's bathroom where the crime occurred.

Under the leadership of the police, Yoriko Komatsu, Kunitomo Oda, and Koji Misawa returned here to be questioned by the police.

The three of them briefly answered a few questions from the police, and then Oda Kuniyu suddenly asked, "...... Mr. Officer, why hasn't Sano come here yet? Hasn't she finished her transcript?"

"Do you mean Miss Izumi Sano? She wants to go to the toilet and change her shoes, and we have a police officer who goes with her......" Officer Twilight had just finished speaking, and suddenly, Takagi ran in in a hurry:

"Officer Twilight, Miss Izumi Sano fainted in the toilet of the medical room just now!~"

"What?!" As soon as Takagi finished speaking, Oda Kunitomo's expression changed drastically, and he immediately ran towards the examination room.

Yoriko Komatsu and Koji Misawa also wanted to run over, but they were stopped by the police, and Conan asked curiously, "Mr. Oda seems to be very concerned about Miss Sano......

"Well, of course. Komatsu Yoriko nodded, and then said in a low voice:

“...... Before that incident, Oda was Koizumi's boyfriend......"