[Iron Sugar] Gal na Imouto no Umi Ryokou ni Doukou Shitara Doutei Soushitsu Suru Koto ni Natta Hanashi [Full Color] [ChoriScans]

A bespectacled big brother gets far more than he bargained for when he tags along on his gyaru little sister's seaside trip, watching her and her busty friend model skimpy bikinis just for him. Teasing nipple play in the open air gives way to a raw, hidden pounding that steals his virginity, with the cheeky gyaru taking her brother deep until he floods her unprotected pussy and panics about the consequences. Sweaty sibling taboo, exhibitionist thrills, and a girl who knows exactly how to make her big bro crack — all rendered in vivid full color.