Takagi took Izumi Sano, Yoriko Komatsu, Koji Misawa, and Kunitomo Oda out of the bathroom, borrowed four rest rooms nearby, and started to take notes.

In the bathroom where the crime occurred, Uncle Maori pinched his chin and said, "...... I always thought that Izumi Sano was the murderer's ......."

Officer Twilight turned his head to look at Uncle Maori and asked for his opinion, "...... Brother Maori, why do you think so?"

As the police officer finished talking, Conan also turned his head to look at Uncle Maori, wanting to hear Uncle Maori's opinion, and Uncle Maori replied seriously, "...... I just heard from Xiaolan and Sonoko that the relationship between the deceased Itami Chihiro and Izumi Sano was not good, and each of them had a motive to kill. And the reason why I think the murderer is Izumi Sano is because of the 'S' ...... written in blood next to the head of the corpse."

“...... Judging by common sense, it should be the death message left by the deceased! And among the four people just now, only Izumi Sano's name starts with 'S'......"

"Uh......" The corners of Conan's and Officer Twilight's mouths twitched twice, and then Conan said cutely:

“...... It turns out that this letter is called 'S'! This sister can still write this letter after being shot, it's amazing!"

Uncle Maori frowned, and looked at Conan unhappily: "Little ghost, you are 'oops' again, it's not normal for the deceased to leave a death message before dying!"

Officer Twilight coughed lightly and said with a speechless face, "...... Brother Maori, please take a closer look, the deceased was shot in the heart by the murderer at close range, and should have died on the spot, how could he still leave a message of death?"

"Uh...... Yes!" Uncle Maori was suddenly asked, and then immediately reacted, "...... Since this 'S' is not a death message, it was written by the murderer with the fingers of the deceased after the deceased's death?

"That's right!" Officer Twilight nodded, "...... The murder weapon that the murderer deliberately left at the scene is also a ...... of Izumi Sano"

Uncle Maori squinted again and said, "...... By the way, Xiaolan just said that Izumi Sano, Yoriko Komatsu, and Koji Misawa were in the skating rink at the beginning of the fireworks, and now it seems that Oda Kunitomo, who has no alibi, should be the most suspicious......"

“...... yes......" Officer Twilight nodded in agreement, "...... But we have no proof. ”

Uncle Maori and Officer Twilight continued to discuss, and Little Imp Conan also pinched his chin, seriously thinking about the reasoning of Uncle Maori and Officer Twilight-

As far as the current clues are concerned, Oda Kunitomo's suspicion should be the greatest, but he always feels that there are other tricks in this......

Conan thought for a moment, then suddenly reached out and pointed to the deceased's pocket, reminding: "Officer Twilight, this dead sister must be very afraid of the cold, right? Look at her, she is obviously going to be killed, and her hand is still in the pocket of her clothes......

When Officer Twilight heard this, he hurriedly looked at the corpse and said in surprise, "...... That's really the case! ...... in her hand."

An forensic officer immediately came over and took the deceased's right hand out of the pocket of his clothes, only to see the deceased's right hand holding a mobile phone tightly.

Officer Twilight took the phone, and Uncle Maori leaned aside and said, "...... Officer Twilight, it is very likely that the deceased left some clues in her hands, and she may have called the murderer's number before she died, deliberately indicating the murderer's identity......"

"Hmm!~" Officer Twilight nodded, then pressed the replay button, only to see the letters "KIX" appear on the phone, along with a series of "#" characters......

"What does this mean?" said Uncle Maori, confused, as he looked at the contents of his phone.

Officer Twilight frowned and thought for a moment, then spoke, "...... Damn, I can't figure it out!"

Conan smiled and said, "...... Why don't we call four of my dead big sister's friends and ask them? and they'll probably know what that means......

"Hmm...... That's right!" Officer Twilight nodded, then said to a uniformed police officer next to him, "...... Please inform Takagi, and after you finish making the transcript, let those four suspects come here!"

"Yes, I see!" the uniform nodded in salute and walked out briskly.

Officer Twilight looked around and said:

"It's strange, where did Yunwen go? He also has a strong ability to solve cases, if he is here, he may be able to give some advice......"

......

In one of the lounges next to the bathroom.

Takagi looked at the transcript that had just been written in front of him, smiled and said, "...... Okay, Izumi Sano, thank you for your cooperation with our investigation. Next, please go back to the scene of the crime, we have some questions to ask......"

"Okay. Izumi Sano nodded, stood up, and then suddenly his foot slumped, and he almost didn't fall.

Seeing this, Takagi hurriedly walked to Izumi Sano's side, hugged Izumi Sano and said, "...... Miss Izumi Sano, are you alright?"

"Well, I'm fine. Izumi Sano smiled slightly, supported the table with one hand, lifted his shoes and looked at them, his face changed suddenly, and then his fingers scratched the edges and corners of the skate blade on the soles of his shoes, put his feet down again, and said with a smile, "...... I almost forgot that I was wearing skates and almost broke my foot...... Mr. Officer, I want to go to the toilet and change my shoes now, can I?"

"Uh...... Of course that's fine......" Officer Takagi nodded, then glanced at Izumi Sano's hand, "...... Miss Izumi Sano, your hands seem to be bleeding......"

"Ahh......h I remember that there was a skating rink not far from here, so I went there to borrow a toilet and treat my wounds by the way......"

"Okay, no problem. ”

Wataru Takagi accompanied Izumi Sano into the consultation room, and Izumi Sano went into the bathroom after borrowing hydrogen peroxide from the medical staff under the pretext of being in a hurry, and having to treat the wound himself in the toilet......

......

on the ice rink.

The fireworks in the sky are nearing their end, but they are still brilliant and beautiful.

Shu Yunwen and Tsukamoto Shumi leaned together, looked up at the fireworks, and suddenly, Chengshi's voice appeared in Shu Yunwen's head: "Lord Yunwen, Izumi Sano just found the blood stains on the soles of her shoes, and it seems that she is going to wash off the blood stains......"

"Wash off the blood?" Shu Yunwen was stunned for a moment, then pursed his lips and replied directly, "...... Really, you're just bothering me and Shumei to watch the fireworks because of this? If she wants to wash it, let her wash it, can she still wash it?"

As long as blood is stained, it is impossible to wash it clean.

Even if she washes the soles of her shoes, the luminol reaction will still glow, and the police can extract DNA, plus the ice blade marks on the soles match the blood stains left at the scene, which is enough to convict! ~

As soon as Shu Yunwen finished speaking, Cheng Shi immediately replied: "...... Yoon-man-sama, she can't wash the blood off the soles of her shoes, but she may be able to wash away her sins......"

"Hmm, what do you mean?" Shu Yunwen was confused.

Chengshi said eagerly: "...... She uses hydrogen peroxide!"