Kakeru Ryuen is a young man of average height with shoulder-length magenta hair styled on either side and sharp magenta eyes that strike fear into anyone he encounters. He has a slim yet muscular physique. In the anime, he wears a standard red jacket and an unbuttoned black shirt. His presence alone is enough to unsettle most students. Behind that chilling gaze lies a blameworthy and reprehensible individual who delights in causing trouble for others. He is ruthlessly sadistic, self-centered, and thinks highly of himself, often underestimating those he deems inferior. Yet beneath his violent tendencies, Kakeru is highly intelligent, cunning, and manipulative, carefully planning schemes and employing unexpected strategies to achieve his goal of controlling the school. He shows no loyalty to his followers, using them only as tools for his own amusement.