[Hikoma Hiroyuki] How to Build a Happy Family (Itazura Sezu ni ha Irarenai) [Rabu2]

Fresh from her parents' funeral, ten-year-old Sayaka is handed to a distant relative whose adoring nine-year-old daughter Mio can't wait to welcome her—gagged, bound, and tutored in cunnilingus before her first night in the new house is out. Mio gleefully recruits her new onee-chan into daddy's bed, insisting that loving each other is how a real family is built, while Sayaka's sobbing protests dissolve under a practiced ffm threesome of tongues, toys, and thrusts. By the time the smiling father promises to knock up both girls, Sayaka's mind break is nearly complete, leaving this twisted household one impregnation away from its happy ending.