In OVA 1, Satoshi endures profound romantic rejection when Ikuko harshly dismisses him, driving him to suicidal despair. Kayuga and Pipi intervene to prevent his suicide. Witnessing Ikuko's poisoning and death deepens his anguish, fueling a quest for vengeance against her murderer. To seduce Dr. Okabe—fiancé of the perpetrator, Dr. Manami—Satoshi accepts Kayuga's offer to temporarily assume a female form. His unwavering devotion to Ikuko culminates in halting her cremation, transporting him to the Bridge of Dreams. There, his selfless wish reunites him with Ikuko's soul, reviving her and restoring his original male form, concluding their relationship with mutual affection.

In OVA 2, a separate Satoshi navigates social awkwardness and sexual repression, struggling in his relationship with girlfriend Mika. Frustrated by his romantic and intimate inability, Mika ends their relationship during an argument, triggering his psychological breakdown. His soul becomes trapped within a video game he plays. Kayuga and Pipi enter the game to confront manifestations of his repressed emotions—including a tentacle monster—to rescue his soul.

The two Satoshi characters are distinct individuals with separate narratives and no connection between their stories.