Kazuya is thrilled to learn that his mother's friend and object of his affection, Mayu, will be visiting after a long time. Then, on the night they reunite, when the two go out drinking alone... In a moment of drunkenness, he comforts her as she vents about her troubles with her husband, and they end up having a relationship. Then, to fill their loneliness, they seek each other's fleshly desires and enjoy secret pleasures together. However, being married, Mayu tries to distance herself from him due to feelings of guilt towards her husband...
