Sukumizu to Bloomer de Hentai Suru Futago-tachi!!

Twin sisters spend their summer vacation indulging in perverse activities while wearing school swimsuits and bloomers. Their days are filled with increasingly lewd encounters involving friends and family members, blurring the lines between innocent fun and outright depravity.

The twins' hentai behavior escalates as they involve those around them, including their parents and acquaintances. Each chapter explores a different scenario where the sisters' uninhibited desires take center stage, leading to a series of explicit and taboo situations.