Yumi (Kazama Yumi), who majored in humanities at a famous university in the past, is a wonderful woman full of intelligence. There was a time when she aimed to study various literature, but now she is married and has a son who will be a student. One day, her son Tomoki brought her friend Takeshi to her house to study. Yumi, who liked the young and cool Takeshi, was stimulated by her sadistic side while watching her struggle.
