SPOILERS TO DANGANRONPA V3 CHAPTER 1.

During the strategy meeting, Rantaro left by lying to Kaito that he needed to use the bathroom in order to check the secret room in the library. While in the library, Rantaro discovered the door into the hidden room behind a bookshelf, which he promptly moved out of the way. This triggered Shuichi's sensor on top of the shelf, and Kaede's hidden camera, whose flash led him over to it. It was around this time that Kaede had thrown her shot put ball that she had retrieved from the warehouse earlier into the air duct that led into the library. The ball came out of the vent and rolled along the books on top of the shelf that she had set up. The ball failed to hit Rantaro but shocked him greatly.

During this time, Rantaro, Shuichi, and Kaede were completely unaware that someone else was aware of their plans to end the Killing Game thanks to the Nanokumas around the entire campus. That someone was the Mastermind of the Killing School Semester, Tsumugi Shirogane. Witnessing Kaede's plan fail through the hidden room, she immediately left it and made her way into the library. Rantaro was baffled as to why a shot put ball fell from up above and, while distracted, was instantly killed by Tsumugi with her own shot put ball. or was he killed?

later.. rantaro woke up.. he was in the infirmity? He tried to sit up, he looked at his classmates, who stared at him with worried looks, korekiyo, gonta and kirumi were the most worried out of all of them, (tsumugi is faking concern), kaede spoke up.

kaede: "rantaro!! You're awake! I was afraid we lost you.."

miu: "yeah, your ass was out cold!"

rantaro was confused.. who were these people? His mind was fuzzy, (Rantaro suffers from slight memory loss due to the blunt force trauma for a minute or two, but he recognizes his classmates, he regained some of his memories, like how he participated in the 52nd Killing game before, his talent, everything), he then spoke up.

rantaro: "who.. are you people..?"