Yumi, a married woman, inherited an apartment building previously managed by her parents and now lives as both landlady and property manager. Known for her nurturing personality, she's highly regarded by tenants, though her kindness sometimes leads to crossing boundaries. One day, she receives a love consultation from tenant Mototani, who confesses he lacks the courage to ask someone out because he's insecure about his small penis. To encourage him, Yumi suddenly pulls down his pants and starts sucking his exposed cock. This bold act marks the beginning of a new relationship.