Stepmother Mari bought a new swimsuit before summer. She was in a good mood, standing in front of the mirror and doing a swimsuit fashion show when her stepson Haruto came in. Mari noticed Haruto's state of being completely entranced by her glamorous body and the provocative bikini, and Kokoro asked for an oil massage. It was the first time she had touched her stepmother's voluptuous, voluptuous and stimulating body... Mari's breathing became heavy as Haruto's caresses, which clearly went beyond the level of a massage, finally crossed the line between parent and child...