Working on distant sea fisheries, the father routinely stayed away from home for months at a time. Each time he returned, he would immediately rush to his wife and embrace her passionately. The son secretly watched these scenes unfold. One day, the father suddenly passed away. Unable to let go of her husband, the mother found herself pleasuring alone late into the night. Witnessing his mother's sorrow, the son felt deep pain in his heart—yet gradually, he began harboring forbidden feelings for her.