Synopsis
The return of the Demon Lord has caused demons to run rampant across the world. While on a mission to defeat them, Leona gazes up at the sky and sees a second moon that should not exist. This red moon is responsible for the Demon Lord's return and grants the demons extra power, making Leona's fight all the more difficult as she faces several of them. In the midst of battle, she is rescued by a young man named Hein, a researcher investigating methods to combat the demons. He explains that there is indeed a way to fight them even with the boost from the red moon—but it requires Leona to surrender her body to Hein. Leona is reluctant, yet circumstances may leave her little choice.
