Recently, Yuka became close with a student named Kuroi at her part-time job. While harboring a slight hope, they went out for drinks together... The sudden excitement that came to her busy days filled with housework and childcare was too much to bear, and she couldn't help but give in to his passionate feelings, starting a time-limited affair. From then on, she would sneak away from work to repeatedly cheat, indulging in pleasure within the limited time she had. As her daily routine became filled with anticipation for these quickie encounters, she would find herself getting wet just thinking about it, even while working...