Satsuki and her husband's junior Yano have found each other's ideal partners and are building a happy family. However, I can't reverse just the compatibility of the body. The two are attracted to each other even though they know it's not allowed. I can't let go of the best partner now. Forgetting myself and forgetting words, still immersed in sex, naked to the core, passionately searching for each other. The best lover and the secret meeting never stop.