A male fifth-grade student temporarily resides with his cousin following her expulsion from home over involvement in an adult video. During this period, he forms a close bond with Mika, a female peer and study partner, through shared homework sessions and activities. His cousin frequently taunts him about his relationship with Mika and his emerging sexuality, provoking discussions on puberty and risqué behavior. A pivotal moment arises when he and Mika discover the cousin’s adult video, abruptly exposing them to explicit content. This incident prompts Mika to initiate physical intimacy, which he resists, asserting they aren’t ready.

Transitioning into junior high, their relationship persists but strains under adolescent hormonal shifts and the cousin’s lingering influence. The cousin’s eventual departure temporarily stabilizes their dynamic, though unresolved tensions linger. In later years, he remains connected to Mika, navigating their evolving bond’s complexities and unresolved emotional echoes from their shared past.