Kagetsu belongs to the Kouga tribe, a group bound by an unusual tradition: members reach a point in adolescence where they must choose their permanent sex, a decision that shapes the rest of their life. For Kagetsu, this pivotal moment arrives while studying under a beloved sensei, and his deepening feelings complicate everything. The choice between honoring tribal duty and following his heart becomes impossible to ignore. Matters worsen when Kohryu, a fellow tribe member, arrives with pressure to bring Kagetsu home. Simultaneously, malevolent spirits begin infiltrating the village, threatening both Kagetsu and his sensei. Caught between loyalty to his people and protection of someone he cares for, Kagetsu must navigate supernatural danger while grappling with a decision that cannot be undone. This supernatural romance balances intimate character drama with genuine supernatural threat. It's for viewers drawn to quiet, contemplative stories about identity and belonging, where personal transformation intersects with external danger.