[P.A. Project (Teruki Kuma)] Ichiban Sentou ~Nibanme~ [biribiri]

A neighborhood sentou gets steamy in more ways than one when the kids' favorite muscular 'Mister' slips into the bath with five playful regulars. Shy Shiori finds herself surrounded by doting friends eager to 'help her feel good' while their onii-chan joins the pile, and Kei, Kimi, and Kozue each show off just how many rounds they can take before the water runs cold. Expect splashing, teasing, defloration, and a slick mosaic-censored harem free-for-all where nobody leaves the bath unsatisfied.