DOCP-274 "No no, you're inserting it, big brother! We agreed to just rub...!" Sometime unnoticed, my little sister had grown into an adult's body with massive breasts that made me lustful! Despite her words, her pussy was getting soaked, so I slipped it i

I, the shitty brother who managed to make a promise with my sister to just do some frottage. Her body had already shed its childish form from when we used to bathe together as kids, and unbeknownst to me, she had grown into a woman's body with huge breasts that I can't stop getting aroused over! No way! Big brother! I'm only rubbing against you! Despite her words of refusal, my dick was soon sloppy wet with her love juices! I can't hold back anymore! Just like that, I plunged into the forbidden pleasure of fucking my sister's pussy...