Although she married her childhood friend Toru, her night life was unsatisfactory and she had abundant body, but her husband's older brother Hiroshi, who returned from abroad, came to stay at home and her ordinary life changed completely. rice field. Maria indulges in masturbation while remembering the pleasures that spring up with the feeling of guilt that she experienced as a child. "If Hiroshi knew this propensity ...", the delusion became a reality with the words of Hiroshi with a meaningful smile and the caress without hesitation.