[Roughly speaking, the four realms] The four realms are divided into: human realm, prison realm, demon realm, divine realm, and human realm: the weakest of the four realms, where humans live. Hell: Also known as hell or underworld, it is the residence of souls after death. (Supreme Commander: Prison Palace) Demon Realm: The Demon Realm is the most chaotic of the four realms, where demons, ghosts, monsters and monsters are concentrated. (Supreme Commander: Demon King) God Realm: The highest realm of the four realms, almost controlling all of the four realms, and the God Emperor has supreme power. (Supreme Commander: God Emperor)---------------------------------------------Dividing Line-------------------------------------------------[Introduction] An ordinary necklace, unexpectedly took her to another world and met him. But... Why does she have an inexplicable feeling for him? He is the devil. She thought she could leave here without hesitation, but now, there are people here that she can't let go... They and them make her reluctant to let go, not to let go of here, and also not to let go of him. His heart that had been frozen for hundreds of years was melted by her. He didn't hesitate to lose his life for her, and he didn't hesitate to lose everything around him. He erased her memory just so that she would no longer get hurt for herself. Hundreds of years ago, they met, and hundreds of years later, they met again. Everything seemed to be back to where it started, with familiar people and everything around him. And the gears of fate are moving again... Gods and demons are one, reborn and destroyed!