Quarreling And Getting Stuck In A Rut... - Some Bad Decisions Lead To A Forbidden Creampie Sex Affair With Sister-In-Law Mayuki Itou

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...