Hiba Iona, a shrine maiden, transforms into the gorgeous and alluring Sailor Fire Hermes to battle monsters. Though she has previously overcome obstacles like transformation interference and theft attempts on her sacred brooch by relying on divine power, a far stronger enemy now appears before her. Facing this new foe, she is ultimately defeated, and Sailor Fire Hermes falls into the hands of the monsters. The Demon King's true goal is to steal the goddess relics held by the Sailor Hermes warriors—by obtaining their power, he can gain infinite strength. The Demon King brutally humiliates and conquers Sailor Fire Hermes, repeatedly raping her sacred body, filling her womb with monster semen in creampie after creampie until she loses her mind completely, becoming his deranged sex slave. In the end, she meets a BAD END.