What would you do if your girlfriend's adult sister had L-cup breasts, was crazy about you, and begged for sex? Yu falls for him the first time he visits the family home and immediately begins plotting her seduction. “Don't tell my sister.” Knowing exactly how powerful her huge tits are, she goes braless and presses them against him until both his cock and self-control give out. Even with his girlfriend in the next room, he repeatedly cums between Yu's soft, slippery breasts and hates himself for giving in.