Ke Xue: Shinichi and I are childhood friends.

The motorcycle successfully "landed" on the platform in front of Gaoyue Hall and almost broke through the railing and fell down.

Youye breathed a sigh of relief. These two people were really brave, but fortunately there was no danger.

"Go, Kudo!" Hattori Heiji shouted loudly.

Conan suddenly took off his helmet, ran quickly to the side of the platform closer to the waterfall, tied his belt on it, and pressed the button on it.

The next second, an inflatable football popped out and began to expand at an extremely fast speed, quickly blocking the waterfall.

The waterfall, whose fall was blocked, could only pour down towards the sides of the football. A large amount of water began to wash away the support of Gaoyuetuo that was engulfed by flames. With the sound of puffing, the originally blazing flames began to slowly go out.

The anxious crowd below was stunned by this scene and cried out in surprise.

Conan carefully popped up half of his body and looked down, his heart sinking slightly -

The inflatable football's duration was still a bit short, and the flames were not completely extinguished. If the people here could not be rescued in time, Gaoyue Hall would collapse sooner or later.

"How to do?"

At this time, a rope fell beside Conan and almost hit him. When Conan was a little dazed, Yuya fell from the sky and landed steadily on the platform.

Conan looked at Yuya in surprise: "How did you get down here?"

He was even more surprised when he noticed the ropes tied around Yuya's body.

Looking at himself, he saw that he was hurt in several places after falling and his body was dirty. Compared with Yuya's calm look, Conan suddenly became furious.

"Why didn't you tell me you had this thing earlier?"

Yuya shrugged, unbuckled the belt around his waist, and said, "Who knew you would fly down like this? If you were a few centimeters off, you could be swimming in the lake right now."

Conan was suddenly speechless, and his eyebrows twitched uncontrollably. This was not swimming. Falling from such a high place, the fractures he and Hattori Heiji suffered were minor. Their internal organs would probably be ruptured due to the impact.

Such a big commotion outside naturally attracted the attention of the three people in Gaoyue Hall.

Yuanshan Heye, who was originally in a state of dismay, suddenly looked up and looked outside: "What's wrong? What happened?"

Ooka Hongye also stood up and looked at the broken door in shock and confusion. There was only smoke outside and she didn't know what had happened.

The three of them walked out of the house together and were immediately stunned by the scene outside.

Ooka Hongye was the first to react and asked Hattori Heiji nervously: "Heiji, what happened here?"

Hattori Heiji let out a breath, feeling a little relieved, and turned around and said, "It's too dangerous here, don't come out!"

Conan took advantage of his size and ran past several people into Gaoyue Hall.

Toyama and Ye were a little confused: "What happened? Even Conan and Kamiya are here? And how did you get here?"

She turned around and saw the scarred, rickety motorcycle in the corner of the platform. She said in shock, "You guys can't be..."

Yuya interrupted their chatter and said, "Regarding this matter, I think we should leave here first. The fire hasn't been completely put out yet."

Achiha opened his mouth, as if he understood something, but in the end he didn't say anything. He obediently followed everyone out of Gaoyue Hall using the rope.

Ayanokouji arranged for his subordinates to drive a small boat here to pick them up early in the morning, and successfully brought everyone back to the shore.

Looking back at the flames that had reignited and were slowly engulfing Gaoyuetang, Toyama and Ye looked at Hattori Heiji with lingering fear: "Heiji, can you tell us what happened now?"

Hattori Heiji didn't answer, but looked at Achiha Kensuke: "Let's see if President Achiha has anything to say about this matter?"

In an instant, everyone's eyes were focused on Achiha Kensuke.

The latter forced a smile on his face. "I don't understand what you are talking about, Hattori-san. If you mean a fire, it should have been just an accident, right? Who would have known that the fire protection system failed?"

"Really?" Hattori Heiji raised his eyebrows.

At this time, Ayanokouji said in a deep voice: "We have already investigated. The fire protection system in the hall was shut down manually. There was no malfunction."

"And according to the surveillance footage, the person who secretly entered the control room was President Achiha's secretary, Kaieda Tengwu!"

As soon as these words were spoken, everyone's gazes became sharper, and Achiha remained silent and speechless.

At this time, Conan pulled Yuya's trouser leg and handed him the thing in his hand.

Yuu took it knowingly and said, "Hey, Achiba-san, if we investigate this karuta, it would be terrible for you, right?"

As soon as these words came out, Achiha Kensuke, who had remained calm until now, finally changed his expression.

Seeing these people playing dumb, Toyama Kazuha couldn't help but ask, "Heiji, what have you been talking about since just now?"

Hattori Heiji chuckled. "I think President Achiha is the one who knows the whole story of this incident best, right?"

"Huh?" Toyama Kazuha and Ooka Kouye showed surprised expressions.

Hattori Heiji said, "I think it all started when Hongye won the championship here a year ago, right?"

"That time, you happened to discover that the order in which Momiji's karuta cards were visited coincided with the order in which her master, Nagoro Shikao, visited during a certain competition."

Ooka Momiji was a little confused: "Mr. Nagoro did teach me how to attack, and we happen to be good at the same karuta, but that doesn't mean anything, right?"

Yuya opened the box containing the karuta cards and said, "Indeed, there's nothing special about this. But it was born by chance."

Yuya turned the karuta card sideways and saw some black marks on it. "This karuta card is used for the Gaoyuekai finals. There are some black marks on it."

"Mr. Yajima, who was murdered, accidentally discovered these marks while watching the Miss Momiji finals video. However, after reviewing the previous finals videos, he discovered that these marks suddenly began to appear five years ago."

Ooka Hongye was puzzled: "I noticed these marks too. Aren't they stains from use?"

As the champion of the women's group in last year's competition, Ooka Momiji naturally noticed this mark on the karuta. However, this was only her second time using this set of karuta, so she naturally regarded it as a stain left over from the past.

But judging from what Youye said, could it be that this trace has other origins?

Hattori Heiji said, "That must be someone who got stained with Mr. Nagoro's blood and then grabbed the karuta, which caused the blood to get on them."

Ooka Momiji was stunned: "Mr. Nagoro's blood is..."

Hattori Heiji said in a deep voice: "Five years ago, Mr. Nagoro, who was declared missing, was actually murdered at that time!"

Ooka Hongye's face turned pale with shock. She took a few steps back in disbelief and almost fell down. "W-what? How is this possible?"