Ryusei Koki is one of the male students at Akademi High School.
Ryusei Koki has blue hair swept to his right, with two strands in front of his face, similar to Lloyd Irving's from Tales of Symphonia. His eyes are indigo. He wears the default uniform for male students unless customized by the player.
Ryusei is a Teacher's Pet. He will not react to a camera pointed at him at this moment in time because there are no camera animations for it yet. If he witnesses murder, he will run to his teacher and report it. He will then lead the teacher to where he witnessed the murder. If the corpse is still there, the teacher will call the police. If not, she will conclude that he was pulling a prank on her.