喧嘩・マンネリ・倦怠期…掛け違えたボタンの果てにゆめる(義妹)と惹かれ合い妻が浮気で不在中、本気で愛し合った禁断不倫 琴石ゆめる
Quarrels, monotony, and a slump in our relationship... I was attracted to Yumeru (my sister-in-law) after a button-down. While my wife was away cheating, we fell in love and had a forbidden affair. Yumeru Kotoishi