Ryusei Koki is one of the students that attend Akademi High School.
Ryusei has cobalt blue hair swept up hair, with two loose strands falling onto his face. He has blue eyes. He wears the default uniform unless customized by the player.
Ryusei is a Teacher's Pet. If he sees a corpse or witnesses murder, he will report it to his teacher, unless another Teacher's Pet already has. He cannot fight back against murderers.
At 7:05 AM, Ryusei goes to school. He walks to his locker at 7:10 AM and changes his shoes. At 7:15 AM, he walks to the right side of the fountain, and talks with Haruto Yuto, Sota Yuki, Hayato Haruki, Sora Sosuke, and Riku Soma.
At 8:00 AM, Ryusei goes to Classroom 2-2 and sits at his desk. He starts class at 8:30 AM, and leaves to go to the cafeteria to talk at 1:00 PM.
Ryusei walks back to class again at 1:30 PM and finishes class at 3:30 PM. He then goes to his locker and changes his shoes, and then he walks home.