Ada Kham, the doting stepbrother, tends to his sister's sunbathing needs, his hands slick with lotion as he caresses her silken skin. His sister's body responds eagerly, her nipples hardening, her pussy throbbing with desire. Ada's own body betrays him, his cock tenting his shorts as he fights the urge to fuck her right then and there. But his sister has other plans, pushing his hands between her legs, urging him to finger her wet cunt. Ada can't resist, and soon he's fucking her hard on the balcony, her cries of pleasure echoing as he pounds her from behind. He fucks her in reverse cowgirl, her big ass slapping against his thighs, until he can't hold back any longer, pulling out to cum all over her back, marking her as his.