FNS-189 · Frustrated Big Sister's Stealth NTR: Secretly Stealing Her Little Sister's Boyfriend's Cock - Rui Shinomiya

Rui, the older sister, returned to her parents' home after a fight with the boyfriend she lived with. She intended to stay in her sister's room for a while, but her sister has a lovey-dovey boyfriend, and Rui is treated as a nuisance. One day, by chance, Rui hears the sounds of the two having sex, and begins to masturbate using their kisses and moans as fuel. With her pussy soaking wet, Rui can no longer hold back; despite knowing he is her sister's man, her greedy nature leads her to reach for his cock...