With this new evidence...let's look back at Rantaro's murder. The night of the incident, Kaede and I were in the 1st floor classroom. We were waiting for the mastermind to trigger the trap we set in the library. Around that time, there were four people in the dining hall...including the mastermind. The mastermind was probably irritated that no murders had yet occurred. After the motive was given, they knew that Kaede was planning something... But the mastermind wanted some insurance. They would take action, if necessary. The mastermind excused themself from the dining hall and went to the bathroom. And from there, to the hidden room in the library that only the mastermind could enter. And there...they waited. With less than an hour before the time limit expired, Rantaro moved the library's bookcase... ...which set off the receiver I was holding.

It all happened the way we determined in the first trial...expect at the end... I ran out of the room, and Kaede rolled the shot put ball into the air vent.

At the same time, Rantaro was lured by the flash of the hidden camera Kaede set. He unwittingly stepped right into the path of the shot.

The shot rolled down the path Kaede made, and then... ...fell right onto Rantaro's head, killing him instantly...or so we thought. It turns out, that was just what the mastermind wanted us to believe. In reality, Kaede's murder plan happened quite differently.

The shot put ball that Kaede rolled didn't actually hit Rantaro. ...He must have been surprised, seeing a shot put ball drop out of nowhere like that. But his fate was sealed. The mastermind saw that Kaede's plan failed, and stepped in to finish the job. The mastermind jumped out of the hidden room and attacked Rantaro from behind! And in their hand, the real murder weapon - their own shot put ball.

Rantaro wasn't killed by Kaede's shot, but by the mastermind's. The mastermind picked up Kaede's shot and left their shot put ball at the scene. They also looted the Survivor Perk Monopad from Rantaro's body. Those things in hand, they retreated back into the hidden room.

I remember seeing the bookcase closing just as Kaede and I got there. The mastermind had probably just finished their crime. And so, the real truth was perfectly hidden from us. We went to the class trial... ...and reached the "truth" that Kaede was the culprit. But that truth had been twisted by the mastermind!

After the murder, the mastermind left the stolen Monopad on the table in the hidden room... ...and threw Kaede's shot put ball into the trashcan. A little careless of them...to not get rid of all the evidence. They probably believed no one would ever get into that room. But we did. Their crime complete, the mastermind went back through the hidden passageway. The passageway led from the hidden room all the way to... ...the girls bathroom on the first floor! While the mastermind was pretending to use the girls bathroom... ...they were actually using the hidden passageway. That's how they moved around without being noticed. Anyone could have used the hidden passageway, not just the people in the dining hall. But looking at the survivors...only you could possibly be the mastermind.

If I'm wrong...please, refute me. Please tell us you aren't the mastermind, Tsumugi Shirogane, the Ultimate Cosplayer!