I hide in my little stepsister's shower and end up giving her the best fuck ever, until I cum in her face

While my dreaded stepsister says goodbye to our stepfathers I take advantage and hide in her shower without her noticing and I masturbate while she showers and notices a strange sound and ends up discovering me and I take the opportunity to tell her that I like her and that I want to fuck her hard until her delicious ass is filled with a lot of milk