My mother, Rin, has a strong sex drive. But my father is indifferent. So mom is always frustrated. Yoichi noticed his mother's suffering but, as her son, he felt there was nothing he could do and chose to look the other way. However, seeing Rin's lonely expression while she masturbated, he made up his mind. I'll comfort mom... It was Yoichi's unique kindness. Rin agreed to just once and accepted her own child. But Yoichi, inheriting the blood of the sex fiend Rin, was so potent that he drove Rin wild...
