The son's sexual arousal is directed towards his mother, a woman close to him! His mother gets out of the bath and the bath towel falls off with a loud "Kyaaa". Her exposed breasts, the ripeness of the body of a middle-aged woman that he has never seen before, give him a sense of rawness that is different from the erotic images of young girls. The son, overflowing with energy, cannot contain himself and attacks her.