Ato 6-ika de Horobiru Gakeppuchi Kokka no Harem ni Shoukan Sarete Shimattan

I dedicate this chastity to the hero! An otherworldly harem adventure story where the protagonist, Ota, is unrivaled with his erotic skills. He is reincarnated in a doomsday kingdom that is about to be attacked by a horde of monsters and destroyed in six days. Ota has acquired the cheat skill "Emper