Ami Kirio, a third-year Babyls Demon School student and ex-president of the Magical Apparatus Battler, emerges from the esteemed Amy family, renowned for prodigious magical prowess. Denounced for his innate lack of magic, he endured ostracization before being confined to the Demon Children’s Garden, a punitive institution where relentless bullying and harsh discipline shaped his warped worldview. A defining moment arose when bullies shattered a cherished charm belonging to peer Yumeko; her anguished despair ignited his fixation on cultivating suffering in others. Kirio’s striking features include turquoise hair and eyes, a beauty mark beneath his left eye, mismatched horns (the right larger and fractured since childhood), and pointed ears. Clad in Babyls’ uniform with a white cape, circular glasses, and a choker housing Baal’s magic-storing stone, his composed exterior masks a manipulative strategist skilled at feigning meekness. His psyche thrives on extracting euphoria from others’ torment, perceiving despair as sublime art. A calculated sadist, he savors both others’ agony and his own defeats, cloaking malice beneath a veneer of politeness. Aligned with Baal’s crusade to collapse demon society into primal chaos, his "Returned to Origins" status reflects a regression to raw, destructive instincts, devoid of empathy. In the Battler Party arc, Kirio orchestrated Iruma Suzuki’s induction into his battler, masquerading as a champion for magic-deficient demons. Secretly, he weaponized the Gabu-ko device to transform a firework into a Babyls-destroying catalyst, craving mass despair. Iruma’s intervention redirected the blast, culminating in Kirio’s imprisonment within Walter Park’s Ouroboros Prison. During the Walter Park arc, he escaped via the Six Fingers’ aid, abandoning fellow inmates to their anguish and reasserting his leadership in Baal’s faction. Reappearing at the Music Festival, Kirio confronted Asmodeus Alice in the Magical Tools Research room, his Evil Cycle-like eyes betraying unaltered malevolence. He harbors a twisted fascination with Iruma, intensified upon discovering his humanity—a prize to either corrupt or consume for unparalleled despair. Kirio wields the Amy lineage’s Barrier magic, conjuring regenerative walls only Yod-tier power can obliterate. These barriers form labyrinthine traps for offense and defense. Baal’s choker supplements his weak magic reserves, enabling grand-scale schemes. Relationships pivot on manipulation: with Iruma, initially seen as a fellow outcast, now an obsessive rival; with Asmodeus, camaraderie devolved into enmity post-Battler Party; and with Baal, a mentor united by their nihilistic vision. Familial bonds, particularly with his scornful mother, remain fractured. Throughout documented events, Kirio’s antagonistic role persists, evolving from overt assaults to nuanced machinations within Baal’s designs. His raison d’être—unleashing chaos through despair—remains unshaken, anchored in the belief that suffering unveils demons’ true, savage essence.