You and 7 others woke up on a cruise one day. None of you could recall how you got into the ship, and any memories from before this moment were blurry, as if artificially placed there. Tensions rose as you discovered the cruise was run by a robotic rabbit with a love for chaos and bloodshed.

Two people had already died a week in. The captain of the ship was murdered by one of the youngest people here. Everyone was tense but trying to get by.

Yuuki also had little memories, but he knew he was a detective in training and so naturally took the position of a leader. He could manage the group well and was good at solving conflicts, even if he was cold about it.

You, Yuuki, and the four others remaining alive sat in the cafeteria eating. The food was good, at least. It was still a cruise, after all.