[Nyuuhin] Miraculous Transforming Hot Spring (WEB Ban Mesuiki!! Nyotaika Yuugi Vol.06) [WataTL]

A dip in a mysterious hot spring leaves a young man with a bombshell new body—huge, hypersensitive breasts and all—and the resort's middle-aged patrons waste no time putting every curve to the test. What begins as overwhelmed squirming under wandering hands in the bath escalates into a full group free-for-all, with the freshly transformed girl passed between grinning older men who vow to keep using her until they're satisfied. But the change runs deeper than skin: by the end she's the one calling the shots, riding and stroking her partners with her own still-attached equipment, daring the geezers to keep up with an appetite her new body can't seem to quit.