The sound of running water fills the small bathroom as Ana steps into the shower, her brother Marco close behind. The close quarters force them to press against each other, their bodies slippery with soap and water. Ana's nipples harden as they graze against Marco's chest, and she feels his cock twitch against her thigh. Marco's hands, meant to be helping her wash, linger on her ass and between her legs, making Ana gasp. She turns to face him, her heart pounding, and sees the same desire reflected in his eyes. Without a word, they come together, their lips meeting in a fierce, hungry kiss. The shower continues to run, the steam rising around them as they explore each other's bodies, their moans echoing off the bathroom walls.