Reiko Shiratori teaches at Gokuraku Private High School, where her colleague Aki Jouji—a reformed yakuza—navigates unspoken affection for her. His attempts to bury his criminal history, driven by fear of her rejection, amplify comedic friction within their interactions. These exchanges underscore Jouji’s struggle to reconcile his hardened exterior with a desire for authenticity, fueling the series’ signature humor through absurd misunderstandings and over-the-top antics. Reiko’s family background, personal history, and physical traits remain undisclosed, with the narrative prioritizing her function as both Jouji’s romantic focus and the inadvertent trigger for his identity clashes. Her character appears solely in the 1992 OVA, anchored entirely within her professional environment and the dynamic tension her presence creates for the protagonist.