[Seika Kairaku Shoten] TS Nyuuyokuzai -Bishoujo ni Nareru Ofuro ni Tsukatte shimatta Boku no Monogatari- [Full Color] [SachiKing]

One soak in a mysterious bath additive and an ordinary man emerges reborn as Keio, a voluptuous beauty whose new body hums with cravings she has never felt before. What starts as shy, gasping self-exploration in the tub spirals into a slick, sweat-slicked grind with her insatiable friend Mizuki, whose plump new curves are impossible to keep apart from. Then a bald, muscular older man arrives to demonstrate just how powerless the drug's instinct leaves her, and by the final page Keio stands in a crisp school uniform, fully settled into a life her old self could never have imagined.