A girl in a uniform is working hard at a convenience store for her boyfriend, who has sold her body to earn a little extra hourly wage... Kasumi, who is broke and working a part-time job at midnight when she shouldn't really be working. The proposal comes from the store manager, who has taken advantage of this weakness in a part-time job behind the scenes of a prostitution business. The store manager, aiming for cup J, has requested sexual services right here and there. The bite of sexual encounters started from making love becoming extreme to SEX and ejaculation into the vagina, and Kasumi's mind and body are worn down day by day.