[Wasuresou na Namae] Kinniku Kyoudai Wakan [Brolen]

A muscle-packed sister and her even more shredded brother finally act on a one-day agreement to give in to temptation, nerves and blushes melting into awe as she undresses him and discovers he is far bigger than she imagined. Her curious hands turn into a slick paizuri session that ends painted across her face and chest, before she climbs on top for a sweat-soaked, muscle-locked ride where neither sibling can hold back from cumming together. Spent and dripping, he makes his real move — why settle for a single day when their compatibility and mutual love deserve being together forever?