"I'm back." Gray Yuan calmly returned to the office, ignoring Conan's hostile gaze, and calmly walked to the sofa to put down his school bag.

Gao Cheng opened his mouth: "Little mourning ......"

"It seems that you already know," Gray Yuan brushed the hair from his ears, and his bright eyes turned to Gao Cheng, "The day you saved me, it happened that I escaped from the organization, and I fell in the rain because I had just taken medicine and became unwell...... What do you think? What are you going to do with me, Mr. Detectives? ”

"Escape?" Conan looked at Gray Plains suspiciously.

"Because I betrayed the Order."

Gray Yuan's tone was flat, but a faint trace of sadness flashed in his eyes: "The arbitrary use of drugs as poison on humans during the experimental phase is one of the reasons for my dissatisfaction with the organization...... But the biggest reason is my sister.

"Since my sister was killed by someone in the organization, I asked several times, but the organization refused to tell me the reason, so I interrupted the drug research to protest, and then I was locked in a room in the research room to wait for the disposal from above, I was going to eat poison to commit suicide, but I didn't expect to become a child like you......"

Gray Yuan said and looked over Conan and looked at Gao Cheng quietly: "Then I was picked up by you who escaped from the garbage chute, how about it?" Do you regret it now?

"Although the organization doesn't know about my small size yet, if I continue to use the medicine directly for the assassination plan, the same case may appear, and when the time comes, they who know how I was a child will definitely find me, and you who have been in contact with me......"

"Xiao Ai," Gao Cheng interrupted, "can you start cooking?" I'm busy all over the place today and haven't eaten much properly. ”

"Huh?"

……

On the road to Shizuoka Prefecture, a yellow Volkswagen Beetle car sped by.

"So Xiao Ai is the same as Shinichi, she is getting smaller by taking medicine?" Dr. Asa was taken aback when he heard about Ashbara, "But is it okay to be an assistant in the detective agency like this?" If the men in black find out......"

"No way," Conan reluctantly looked at Gao Cheng and Ashbara who were taking a nap in the back seat, and muttered, "It would be more troublesome if she ran around outside, and the city would be happy to take care of her." ”

"Okay," Dr. Asasa said after helping him enroll in Shizuoka Prefecture, but he didn't have a good impression of him, so he asked, "By the way, what are we going to Shizuoka Prefecture for?" They also asked me to drive out. ”

Conan looked serious: "It seems that a magnetic tablet related to medicine materials from the past has arrived in the hands of a professor, so we plan to get it back......"

"We'd better hurry," Gao Cheng said suddenly, "If those people in black had carefully investigated Xiao Ai, maybe they would have gone to find the magnetic sheet, after all, the institutions related to Xiao Ai have been destroyed in the past few days, and it is impossible for the information that has been circulated outside to go unnoticed by that organization." ”

Gray Yuan glanced at Gao Cheng unexpectedly, but he didn't expect Gao Cheng to realize this.

In a trance, she recalled the time before her sister's accident.

"Although that Detective Joto is very similar to a famous high school detective, I always feel confused, and in the end I had to find another detective agency," the sister in my impression smiled, "Compared to the other detective agency, the relationship with a famous detective is much better, by the way, do you remember the little boy named Edogawa Conan?" That's what I met at that detective agency. ”

"Edogawa Conan?"

"It's the bespectacled boy I mentioned to you last time......"

Gray Yuan thought silently, his blue eyes trembling slightly like pearls in the dim car.

"By the way, sister, you're fine, right? I've heard you've been not doing well lately......"

"Don't worry, everything is going well, I'm still worried about you, don't make any more medicines, it's important to get a boyfriend quickly, so I don't have anything to worry about......"

"What's wrong?" Gao Cheng met Gray Yuan's gaze suspiciously.

"Nothing." Ash Yuan turned his head to look out the window.

Shizuoka Prefecture is more than 100 kilometers from Tokyo, and the car drove for more than three hours, and it was not until 11 o'clock in the evening that it arrived at Professor Hirota's house, which had been arranged to meet in advance.

Just in case, Dr. Asa parked his car a little further away from Hirota's house, and Kosei and Conan went to visit Professor Hirota.

"Hey, Joto," Conan reminded him, looking back at Ashbara, who had been waiting in the car with the Doctor, "don't be careless, even though he's just a little girl now, he's a member of the Order before, and betraying the Order is just her own rhetoric......

"When I asked her what the purpose of the organization was, she pretended not to know it, and she didn't tell us her real name or age, which was just a lie to make us believe her."

"Is there one?" Gao Cheng knew that Conan still didn't trust Gray Yuan, "She doesn't need to lie at all, otherwise you would have been arrested by that organization a long time ago, and even if you hide it, you should have some trouble." ”

"Chenghu, you shouldn't ......"

Conan suddenly looked up at Gao Cheng suspiciously.

"You're not going to be a lolicon, are you?"

"What nonsense."

Gao Cheng ignored Conan and rang the doorbell of Hirota's house directly.

"Hello, I'm the castle I said before."

"Oh, it's Mr. Joto, my husband mentioned it to me, please come in." The one who came out to open the door was a fat woman, in her 50s, who was the wife of Professor Masami Hirota.

"It seems that a few of my husband's former students have visited, but this will all go back, and my husband should be in the study now."

"Should?"

"I'm sorry, but I've just come back, and he's usually in the study when he's waiting for guests."

The fat lady took Gao Cheng and the two to the outside of the study, knocked on the door but did not respond, and the door was locked.

"Husband?"

"Strange, what are you doing in there? The door was also locked...... Husband! ”

"Wait!" Gao Cheng narrowed his eyes slightly and sniffed.

"This smell ......"

The smell of blood! It's light, but it's definitely bloody!

"Mrs. Hirota," Gao Cheng said in a deep voice, "is there a backup key?" ”

"Huh? There is no ......"

"I had to slam the door open!"

Gao Cheng's gaze fell on the fat lady: "Madam, please trouble your tower handle." ”

"Huh?"

……

More than ten minutes later, the police received a report and rushed to Guangtian's house, led by an old acquaintance, Officer Henggou, with a national character face and a coral head, who was a good old man.

"Detective Joto!" Seeing Gao Cheng again, Henggou was quite surprised, "I really haven't seen you for a long time!" ”

"Officer Henggou, let's investigate the case first." Gao Cheng laughed that this police officer was a fan of Uncle Maori, but he met him more often.

"That's right." Henggou seriously entered the study scene.

In the study, the bookshelves collapsed, and the books were scattered all over the ground, and the owner of the house, Professor Hirota, was crushed underneath, bleeding from the back of his head.

"Officer," the medical examiner reported, holding a trophy after examining the body, "the ornament appears to have caused the fatality, presumably from the ...... that was hit during the fall"

"Falling?" Dr. Asasa who was standing on the side said in confusion, "What does it mean to fall?" ”

After the police arrived, he and Gray Yuan did not stay in the car, but took the opportunity to follow, quite surprised that Professor Hirota was killed so coincidentally.

"Judging from the situation at the scene," Yokomizo explained, "the outdated Mr. Hirota must have climbed onto the bookshelf, but his center of gravity was unstable and he fell down with the cabinet, and unfortunately his head hit the trophy that fell from the bookshelf first, and he died......

"The doors and windows of this room are all locked, and the only key in the room is under the dropped notebook, so it looks like it was an accident."

Henggou paused as he spoke, and looked at Gao Cheng with his spirits: "However, I think this is a homicide incident." ”

"Why?"

"Because the Castle Detective is here, too."

“……”