NGHJ-059 - Bath with my pre-marital sister after 10 years, 'I won't get hard over your boobs' - then she peels back my foreskin during a bubble bath and I explode

A brother and his pre-marital sister share a family bath for the first time in 10 years. Despite claiming he wouldn't be aroused, the brother gets fully erect when his sister peels back his foreskin while washing him, revealing his virginity. Even though she's engaged, the sister gets turned on by his massive member. 'It's okay if it's me, right?' The taboo incestuous deflowering begins.