A busty wife who was robbed, her body and mind cuckolded by her husband's brother...

Although Maria marries her childhood friend Tooru, she is unable to enjoy her voluptuous body as her nightly activities are unsatisfactory, but when her husband's older brother, Hiroshi, returns from overseas and comes to stay at her house, her ordinary life changes completely. Maria indulges in masturbation while recalling the pleasure that welled up along with the guilt she experienced as a child. Just when Hiroshi was worried, ``What if Hiroshi found out about this sexual fetish...'', Hiroshi's words with a meaningful smile and his careless caress made her fantasy become reality.