Love to work part-time at the same convenience store as her boyfriend. - Ai, who knows only one man, has spent her time without questioning that he is a coarse chin, but she begins to feel vaguely uncomfortable with the lack of a sense of penetration. - One day, she sees the store manager's huge smile. - With a strong desire to explore big cocks and an unstoppable sexual desire, he begins to attack him innocently as a married man.