Keisuke, the son, falls in love with his mother, Yuka. He has a mature body and good looks. Every time he is exposed to her defenseless sex appeal, he begins to think of Yuka not as her mother but as a sexual object. He loses his patience and plots to make her his own, stealing her father's attention and attacking Yuka. Did you like the chastity belt I gave you? If you want me to take it off, you can ask me to take it off. Keisuke tries to control Yuka's sexual desire with the chastity belt and gain access to Yuka's body. Although Yuka is confused by Keisuke's outrage, she resists...