[Aruma] The Pleasure Twins (Koakuma-tachi ga Yattekita!) {Mistvern}

A big brother stops by his little stepsisters' school festival, only for twins Remi and Ami to lure him into their dress-up salon and ambush him with a private show of school swimsuits and hoodies picked out just for him. Playful teasing spirals into a breathless ffm threesome of twin mouths working his cock and balls in tandem, followed by a defloration so impossibly tight he swears the sisters are identical even inside. Spent and panting, he nervously asks if they do this with other customers, and the giggling twins seal their promise with kisses to each cheek, cooing that Onii-chan is the only one they love just as his arousal starts rising all over again.