Shūsuke Chitose works part-time at Alexander, a restaurant and bar, where his initially contentious rapport with Hiyoko Tamaizumi—an aspiring novelist—shifts as they collaborate. He supports her craft through thoughtful critiques and encouragement, fostering her confidence and deepening their connection.

His routine belies a fractured existence: Shūsuke is one of three splintered identities within Takashi Haneda, sharing a body with Hayato Narita and an unstable fourth persona. Each personality occupies distinct timelines—morning, afternoon, night—within the same recurring day. Injuries, like a chair-inflicted head wound, materialize simultaneously across all selves, hinting at their hidden unity.

These personas occasionally convene in a shared mental realm resembling a church, negotiating roles and responsibilities tied to their temporal domains. Shūsuke’s journey mirrors the strain of sustaining fractured identities, as his storyline gradually intertwines with those of his counterparts.

Beyond Alexander, he navigates encounters with bartender Karuo Karube and tangential gang conflicts, which shape his reserved pragmatism. Balancing work, relationships, and the enigma of his existence, Shūsuke’s interactions underscore the tension between outward composure and inner fragmentation.