"Please... Don't tell your husband about you ..." Yui, a married woman who suffers from sexlessness, was seen by her brother-in-law masturbating alone and was threatened and had a relationship. Even if you know that you shouldn't do it, your body burns to the fact that you are needed as a woman, and your instinct asks for a meat stick. Yui, who can't get out of the quagmire of affair and incest, finally accepts her brother-in-law's sperm into her hot vagina.