Yuka has recently become friends with Kuroi, a student at her part-time job. With a faint sense of anticipation, the two of them go out for a drink... Unable to suppress the tingling in her womb due to the sudden excitement that came to her while she was busy with housework and childcare, she accepted his passionate feelings and began a time-limited affair with her. Since then, Yuka has repeatedly been unfaithful to her in between her work, regardless of the place, and devours her pleasure in a limited time. Expecting her to have sex in a short time, which has become her daily routine, she ends up doing her job while getting her crotch wet...