The parents, who initially seemed to have a good relationship, were actually experiencing sexual frustration... Unable to consult anyone, the mother could only crawl into her son's bed, where her sexual desire erupted, leading to incestuous intercourse. (Kawakami Yu, VENX-345)

"This is what despair is..." The Kawakami couple, once interviewed on television, are known for their loving relationship. However, as they approach their forties, the situation changes. A heavy burden weighs on them: the problem of sexual frustration. The wife, Yu, experiences a surge in libido and is in the throes of wanting to have sex. The husband, Ken, begins to decline, finding it increasingly difficult to perform. In this distressing situation, Yu is presented with a golden opportunity to turn crisis into opportunity…