Dissatisfied with sex with her husband, my big-ass sister-in-law unilaterally returned to her parents' home and took out her horny frustration on me. Ooba Yui
After marriage, Yui could no longer feel any sexual stimulation from her husband and, overwhelmed by the unfulfilling days, decided to return to her parents' home. Initially, they tried to maintain a normal sibling relationship, but as time passed, her younger brother began developing romantic feelings for her. Yui is the type who gets aroused when her big ass is groped, and she forcefully turns her brother into an ass enthusiast. Once transformed, the brother desperately strives to pleasure her. Their relationship evolves into passionate sex filled with diverse scenarios, driven by a younger brother obsessed with her big ass and an older sister who thrives on the excitement. Throughout this journey, their bond deepens, weaving an intense narrative where desire and emotion intertwine.