While cleaning the bath with my stepsister, suddenly the shower hit her and soaked her uniform! Her body lines and underwear showed through, and I stared in awe, accidentally getting an erection! Shit! As I was flustered, my stepsister also squirmed shyly, making the atmosphere awkward. Then, as I was at a loss for what to do, she leaned in close with glistening eyes. What? Wait a minute! She reached out towards my crotch! The unexpected erection triggered an unspoken secret between me and my stepsister that we could never tell our parents.
