A murder has occurred. After receiving the report, the police quickly arrived at the scene. The officer in charge of the team was Detective Yokomizo, a detective fan of Kogoro Mouri.

While being chased away from the crime scene by Kogoro Mouri, Conan took out his phone and called his best friend Heiji Hattori, asking for backup.

Based on a thorough on-site investigation and statements obtained from several witnesses, the police, after analysis and deduction, identified Shizuka Ikemura as the suspect.

"My surname is Chi Bo. Please give me your guidance."

Despite the suspicious looks from the police, Shizuka Ikebab remained remarkably calm.

After introducing herself, she calmly explained why she had come to the scene: "The purpose of my trip is to find an old friend, Mr. Shibata Shiro, and ask him to return an old photograph that was taken 30 years ago to me. That's why I asked Mr. Mori to find this place."

After hearing her calm and composed explanation, Inspector Yokomizo turned his gaze to Kogoro Mouri, and said with a hint of inquiry, "Mr. Mouri..."

Yes, that's true.

Kogoro Mouri nodded and helped with the verification.

Officer Yokomizo's expression turned serious, and he immediately asked, "Then, Ms. Ikenami, what kind of photo are you referring to?"

"I think the photo she was talking about must be the one the deceased was holding!" Conan stood to the side and pointed to Shibata Shiro lying on the ground.

In the other person's hand, an old photograph was being held tightly.

Upon hearing this, everyone present was shocked, except for Ikeba Shizuka, who remained calm.

Officer Yokomizo appeared flustered and hurriedly began to investigate.

Kogoro Mouri, equally astonished, leaned closer in disbelief, muttering, "How is this possible... Ah!"

Halfway through their conversation, the two of them realized what was in the photo.

It was a young woman holding a medal and facing the camera, with the nameplate behind her clearly displaying the four characters "Chi Bo Jing Hua".

"Chibo Jinghua... Jinghua... You're Aunt Jinghua!" Xiaolan suddenly realized who it was and shouted out.

She said that she had been feeling that the other person was familiar, and it turned out that she had met him in Osaka before.

However, when Ye introduced her as Hattori Shizuka, and since they had just met, the other party had been introducing her as "My surname is Ikebab" without revealing her real name, which is why she didn't recognize her in time.

"What, Ran, you know this lady?" Kogoro Mouri asked, his eyes wide with surprise.

"Yes, I know her! Aunt Jinghua is Nan's swordsmanship teacher!"

As Xiaolan explained, she hurriedly ran to Chibo Jinghua, bowed respectfully, and then reintroduced herself, "Hello Aunt Jinghua, my name is Maoli Lan, and I am Nan's girlfriend."

Ikeba Shizuka looked Ran up and down with gentle eyes and said with a smile, "So it's Ran. I've often heard Yuzuru mention you."

"Really?" Xiaolan blushed slightly upon hearing this and gave an embarrassed chuckle.

While they were chatting happily, Conan's expression kept changing.

"Yusuke, this woman is actually related to Yusuke!"

Conan stared at Shizuka Ikenami chatting with Ran, silently gritting his teeth.

He was still looking for clues and thought that this woman was probably not related to the case, but now it seems that the suspicion against her has greatly increased.

It wasn't that he was being paranoid, but rather that there wasn't a single normal person around Yuzuru Nanami; they were all reckless and lawless individuals.

Thinking this, Conan sent a message to Heiji Hattori, urging him to hurry over.

"But why is this photo in the hands of the deceased?" Kogoro Mouri, looking puzzled, couldn't help but interrupt his daughter's reminiscence.

“In my opinion, this is very likely a message left by the deceased before he died,” Officer Yokomizo said with a furrowed brow.

"Impossible, this couldn't possibly be related to Aunt Jinghua!"

Upon learning that the other party was her boyfriend's mentor, Xiaolan decisively stepped forward and shielded Chibo Jinghua behind her.

Seeing her decisive action, Shizuka Ikemura's eyes immediately softened.

“Yes, yes, that photo should have been tucked inside the book. I think it just happened to fall out when he fell,” Kogoro Mouri quickly chimed in.

But Conan then contradicted him, pretending to be innocent, pointing to the dead man on the ground, and said in a childish voice, "Hey, look, it looks like there's something under Uncle Shibata's stomach?"

Upon hearing this, Officer Yokomizo immediately crouched down to examine it and discovered it was a novel.

Something was wrong, and even Kogoro Mouri began to have doubts. "Ms. Ikenami, could it be that this is the novel you borrowed?"

"Yes, that's the novel."

Faced with this situation, Shizuka Ikenami's expression remained unchanged, and she calmly said, "This is the novel that I lent to Mr. Shibata thirty years ago, and I also put a photo inside."

With her words in mind, the police then carefully reinvestigated the scene and, after a thorough search, found a bloodstained wooden knife in the apartment's emergency exit staircase.

Subsequently, the police confirmed with Mrs. Shibata that the knife belonged to the deceased.

"Ms. Ikebami, I think you are the murderer!"

After reviewing all the clues gathered through the investigation, Officer Yokomizo pointed the finger at Shizuka Ikenami, who was chatting with Ran nearby.

Chibo Jinghua calmed down Xiaolan, who was agitated and wanted to defend her, and said calmly, "What do you mean by that?"

Inspector Yokomizo said confidently, "I don't believe you can deny it. You made a phone call beforehand to confirm the location of the photo. In order to retrieve the photo, you actually came here once this morning and brutally murdered Mr. Shibata Shiro!"

"Where's the evidence?" Ikeba Shizuka remained calm and composed.

"The evidence is that bloodstained wooden sword. You had a fierce argument with Mr. Shibata Shiro because of that photo, and in the heat of the moment, you grabbed the wooden sword from the shoe cabinet and struck the deceased on the head without thinking. I think Mrs. Shibata can testify to that!"

Inspector Yokomizo looked firmly at Mrs. Shibata beside him, and only continued after she nodded in confirmation:

"At the time, you must have thought Mr. Shibata was dead, which is why you rushed away from the scene. But to everyone's surprise, Mr. Shibata, with his last breath, found the photo you were trying to retrieve and held it tightly in his hand, leaving us with crucial information. Do you have anything else to explain?"