I Must Pretend to Be Pure in a World of Reversed Chastity, or I Will Die

You know those webnovel protagonists who are so dense they couldn't trip their way into a harem? I hated them. I'd leave scathing reviews, yelling at my screen, "If that was me, I'd be a legend!" Well, I got my wish. A god dropped me into a world with a "reversed" sense of chastity—men are scarce, and I'm surrounded by stunning, assertive women who make the first move. It's the perfect setup. Except it's not. The same god shackled me with a "Purity System." One flirtatious comment, one impure thought, and it's game over. Literally. Now, I, the master flirt, have to play the part of the most clueless saint in history just to stay alive in a world built to be my heaven. This isn't a power fantasy; it's a special kind of hell.