The story follows two intertwined romantic arcs with supernatural elements:
1. Maya, a Black Goat Ajin (a humanoid with goat-like features), becomes a live-in maid for Christophe, a reserved businessman. Despite her attempts to charm him, he remains aloof until a bathroom mishap reveals his secret fetish: an intense arousal from shaving fur. Their professional relationship evolves into a passionate, taboo romance as Christophe confesses his obsession with her “magnificent black fur,” leading to intimate encounters where shaving becomes a metaphor for vulnerability and connection.
2. Rukka, a performer in the Shachia Troupe, navigates a shy romance with Masaki, an earnest admirer. Their mutual crush culminates in a clumsy yet heartfelt sexual encounter backstage, where Rukka’s insecurities about her non-human anatomy (hinted as aquatic or floral traits) are assuaged by Masaki’s genuine affection. Their peers conspire to push them together, resulting in a tender, awkward exploration of first love.