喧嘩・マンネリ・倦怠期… 掛け違えたボタンの果てに舞雪さん（義姉）と惹かれ合い中出しセックスに溺れた禁断不倫。 伊藤舞雪

The affair partner is my sister-in-law, my wife's older sister. Marriage was the epitome of youth. She gets married just because of momentum, but the number of quarrels increases, and the couple's relationship is in a rut. It didn't take long for her to have an unfaithful relationship with her sister-in-law, Maiyuki, who was on her advice. A quagmire guessing affair with no goal, but I won't stop this urge. Drowning in passionate sex that reminds her of the feeling of 'loving people' that she had lost in her married life... Serious vaginal cum shot over and over again.