Kakeru Ryuen, a Class 1-C student, commands attention through ruthless leadership and razor-sharp strategic prowess. His average height belies a lean, athletic frame, accentuated by striking magenta eyes and shoulder-length magenta hair split into two distinctively styled sections. While the light novels depict him in standard uniform, his anime persona favors a bold red jacket layered over an unbuttoned black shirt, defying conformity. A manipulative tactician with a sadistic edge, Ryuen thrives on psychological control, weaponizing fear to dominate peers. He relishes violent outbursts, assaulting underperforming subordinates or provoking chaos to secure objectives. Yet beneath this brutality lies a calculating mind, crafting schemes like the "zero point strategy" during survival trials or orchestrating aggressive intelligence-gathering operations. Though ethically unbound in pursuing results, he harbors unwavering loyalty to Class C and selectively allies with figures like Hiyori Shiina, whose analytical independence earns his rare respect. Childhood in an ordinary household failed to curb his innate aggression. A formative moment arrived during a school trip when he slaughtered a snake, igniting a fixation on fear-based dominance. By middle school, he cemented a delinquent reputation through brawls and honed a raw, self-developed combat style, solidifying his creed that power flows from violence. His worldview fractures after a humiliating defeat by Kiyotaka Ayanokōji, whose overwhelming force inflicts paralyzing terror—a first for Ryuen. Forced into introspection, he temporarily withdraws before reemerging with refined tactics. Shifting from pure coercion, he engineers Class C’s resurgence via calculated test strategies and pragmatic alliances, such as recruiting exiled Class A leader Kōhei Katsuragi. Interactions orbit rivalry and utility: he clashes with Kiyotaka as both nemesis and intellectual equal, locks horns with prodigy Arisu Sakayanagi, and coldly exploits informants like Rokkaku Momugi. Peers grudgingly admire his tenacity and adaptive cunning post-defeat, even as they recoil from his methods. Evolving from fearmonger to shrewd strategist, Ryuen melds aggression with collaboration, driven to elevate Class C while confronting the cracks in his once-unshakable belief in violence’s supremacy.