Momo-an Maeda, a fourth-year university student looking for a job, ends up signing a ``one-week mistress contract'' with a sexually active middle-aged man from the human resources department she met during a visit to her alumni. - Licking the whole body, giving tit fuck instruction, and even managing sexual desire with a chastity belt. - During a strong call to her boyfriend, she is played with as much as she likes and has sticky sex. - She is shaking her hips and doing yoga crazy with her male friend. - In just one week, she becomes a middle-aged erotic woman.