Secretly stealing her younger sister's boyfriend's penis, the sexually frustrated older sister engages in NTR (Netorare) – Shinomiya Rui FNS-189

Rui, the older sister, returned to her hometown after arguing with her live-in boyfriend. She originally planned to stay in her younger sister's room temporarily, but her sister, who was in a passionate relationship, saw her as an inconvenience. One day, Rui overheard the sounds of the two making love and began using the kisses and panting sounds as masturbation material. Her vagina became soaking wet, and unable to resist, Rui, even knowing it was her sister's man, was overcome by her greedy nature and unconsciously reached out and grabbed his penis…