With the Kanda River visible from the window, in a 4.5 tatami room in a rundown apartment, this married woman learns pleasure... and love. This is the story of an elementary school teacher who embraces the mother of one of his students. Yuu, 31, visits her teacher's (a middle-aged, single man) rundown apartment to ask him to write a recommendation for her only son, 11. She gives in to him, saying that it's all up to the mother's enthusiasm... The sexless, sexually frustrated married woman's body becomes wet with the intense caresses of the middle-aged man. The vagina of a multi-birth woman, capable of multiple orgasms, won't let go of the cock. A secret rendezvous that can't be told to her husband or son...