Aren Kuboyasu, once the notorious leader of Carnage Middle School’s delinquents, sought redemption by transferring to PK Academy, determined to abandon his violent history. His moniker, “Carnage Middle’s Murder Weapon,” originated from unparalleled combat prowess—effortlessly dismantling gangs and detecting concealed threats through instincts mirroring his name’s anagram, “clairvoyance.” Initially marked by a mullet and a skirt-like modified uniform, he reinvented his image at PK Academy with shorter dark violet hair, glasses, and conventional attire to blend into ordinary life. Born on September 2 to parents leading rival motorcycle gangs, he inherited their fervor for bikes, often slipping into earnest, boyish excitement when discussing them. Though prone to explosive outbursts early on—nearly harming peers over trivial slights—he cultivated restraint, emerging as a composed, dependable ally. His muscular frame and concealed scars beneath long sleeves serve as silent testaments to his turbulent youth. Aren’s relationships pivot on contrasts: a prickly rivalry with Saiko, whose narcissism grates against his pragmatism, and an earnest bond with Shun Kaidou, the sole peer granted the intimacy of using his first name. Beyond brawling, he aids friends in securing driving licenses and reveals hidden talents like culinary finesse and artistic skill. A whimsical streak surfaces when he crafts elaborate baby names after receiving a love letter, juxtaposing his rugged demeanor with unexpected playfulness. His father’s childhood home, designed as a nod to *Grappler Baki*, houses Aren’s jagged, almost visible aura—a visual metaphor for his lingering ferocity. Initially uneasy in casual social environments, he slowly acclimates, reflecting his incremental embrace of mundane student routines. Aren’s arc traces a shift from unbridled aggression to deliberate calm, retaining battle-honed reflexes while redirecting his strength toward protecting allies. Blending pride, perceptiveness, and flashes of vulnerability, he embodies duality—a former enforcer navigating the complexities of normalcy, forever balancing the shadows of his past with a guarded hope for connection.