The key to this incident is the surveillance camera video that only I saw. That's why...I'm going to start with that to unravel the knots of this crime. When I went to the hospital with Mikan this morning, I noticed a specific thing in the lobby. The incoming signal light on the surveillance monitor was blinking ahead of the scheduled time. When I switched on the monitor, what appeared onscreen was... ...a person wearing a hospital gown and a bag on their head about to hang themselves right at that moment.

That surveillance camera unit was designed for two-way communication with the hospital and the music venue... That's why I thought the signal originated from the music venue...so I immediately headed over there. But that was the killer's trap... In truth, the video was recorded in a different place. The killer brought the music venue camera the night before and made their preparations in advance... And then...they filmed that video in the hospital conference room. By doing so, they tried to make me think the incident was happening in real-time. When in fact...the crime had already been committed by that point. The person in the footage wearing the bag was actually the killer acting as a fake.

I didn't know that, so I went to the music venue...and found the hanged body wearing a bag on its head. Seeing the body before me, I panicked and rushed out of there to get the rest of you guys... But...that was also part of the killer's trap. After cleaning the conference room, the killer was likely watching the music venue from outside... And, as if they were switching places with me, they went inside the music venue... ...and began working on their last trick.

First, the killer peeled off the wallpaper covering one of the stage pillars, revealing Hiyoko's body. When I first arrived and saw the hanged body, I didn't notice anything strange about that pillar... I didn't expect it to be slightly larger from the wallpaper, or have Hiyoko's body hidden inside... Next, the killer destroyed the surveillance camera that was used in the conference room.

After destroying it, they mixed it with what was left of the surveillance monitor found at the crime scene. The surveillance camera the killer used was originally brought from the music venue, but... ...when they brought it, they made sure to destroy it's monitor beforehand. They wanted to hide the fact that the camera wasn't at the crime scene... In the end, the killer transformed the crime scene into a closed room. They broke one of the drumsticks from the storage room and placed it near the music venue's entrance. However, they did this to mislead us into believing that the music venue was locked from the inside... In actuality, the reason the music venue became a closed room was because of the glue. The killer sealed the door with glue and intentionally created a closed room that could be forced open.

With that, the killer finished tampering with the crime scene and met up with Fuyuhiko, Chiaki and me... They helped us force open the music venue door, despite the fact they personally sealed it. And they made us discover not just Ibuki's body, but Hiyoko's suddenly present body as well. At the time, they pretended to be surprised but... Inside, they were probably relieved that their plan worked out...

Isn't that right, Mikan!? This crime was orchestrated by you, wasn't it!?