Shinichi is hospitalized for a month after a motorcycle accident.However, he is transported to the hospital where his aunt Eriko works by chance.Shinichi, who couldn't masturbate for 10 days when he was nervous about Eriko's gentle and beautiful nursing, couldn't stand the erection all the time and finally asked Eriko for sexual treatment.Although he is puzzled, he handles it by hand for the sake of his cute nephew.However, Eriko can't get rid of the erection cock she saw for the first time in a long time.Then Shinichi visits again to ask for sex treatment.