Kazuma Morisato, a high school student in Yanagihara, carries a reputation as a delinquent fueled by his aggressive demeanor and frequent clashes in street conflicts. Beneath this hardened exterior lies a fiercely protective older brother devoted to his younger sister Ayumu, his care for her contrasting sharply with his volatile public persona. Struggling with a deep fear of abandonment and unresolved emotional tensions, Kazuma navigates complex relationships—most notably with childhood friend Asuka Watarai, whose unspoken mutual attraction complicates their bond. The arrival of Madoka Aoyagi further entangles his heart, sparking a fraught love triangle that amplifies his inner turmoil.

As a key member of the Yanagihara Flame Birds, Kazuma fights relentlessly to uphold the gang’s dominance, clashing with rivals like R-Wings over even minor disputes. His loyalty to the YFB intertwines with fraught alliances, including his long-standing connection to fellow member Dora and the simmering tension caused by childhood friend Ai’s interest in him. Beyond gang warfare, Kazuma’s nights plunge him into Yanagihara’s shadowy supernatural undercurrents, where otherworldly encounters force him to grapple with buried insecurities. These trials chip away at his defenses, revealing vulnerabilities that challenge his self-perception and drive incremental growth. His journey weaves together street-hardened grit, fragile emotional bonds, and the eerie mysteries lurking beneath the city’s surface—each confrontation a step toward reconciling the duality of his nature.