Hayato Narita serves as one of three primary male perspectives initially presented as distinct individuals. He works as a nocturnal handyman, performing physically demanding jobs that earn him the nicknames "Dracula" or "Drac" and reinforce his self-image as a "hard-boiled" loner who avoids conventional society, preferring delinquents and night denizens. Older acquaintances like Kakeru Ohtori refer to him as "Falcon," hinting at past ties. His antisocial demeanor shifts upon meeting Naru Ohtori, Kakeru's cheerful high school sister, who hires him to find her lost bicycle. Despite his preference for solitude, Naru’s persistent presence and romantic interest draw him into collaborations, including aid from former gang members after he defeats their leader.

A critical revelation uncovers that Hayato, Takashi Haneda, and Shūsuke Chitose are dissociative identities of a single individual, Yōji Haneda, who observes them from seclusion. This fractured psyche stems from severe trauma, creating distinct personas operating on separate timelines within Yanagihara. Hayato embodies the "street" persona—tough and solitary—contrasting Takashi’s school-based fantasy escapism and Shūsuke’s bar-centric social struggles. While initially unaware of each other, Hayato and Shūsuke demonstrate covert coordination regarding Takashi, who remains oblivious. Physical manifestations of one personality’s injuries appear on the others, foreshadowing their connection.

Hayato’s relationships center on Naru Ohtori, who challenges his isolation, and his complex history with Kakeru "Phoenix" Ohtori, leader of the Yanagihara Flame Birds. He maintains loyalty to night associates like Martinez, a friend surviving a shooting. As narratives converge, Hayato becomes pivotal in confronting the personalities' traumatic origin: an obsession with the video game *Wing Quest* and the fantasy world Gretagard, which Takashi believed real. Discovering Gretagard’s fictionality triggers a crisis, exacerbated by the emergence of a fourth violent personality, Karura Itami (Garuda Darkblack), representing uncontrolled rage. Resolution occurs when the personalities confront each other and their trauma within a symbolic church-like mental space overseen by Yōji. External influences like Asuka Watarai facilitate reintegration toward a cohesive identity and healing.