Lucifer

Lucifer is a priest who is among the top strongest to defeat the devil. However, the world is doomed. The devil who made a promise with the "sleeping devil" and allied to destroy humanity. Lucifer is overwhelmed. Unable to defeat the "sleeping devil". Everyone dies. Lucifer breathes his last breath. His vision is dark. When Lucifer thinks he is in the afterlife, Lucifer opens his eyes, but there is something strange. He wakes up in his room and looks in the mirror, seeing himself 19 years old. One year before the apocalypse occurred. Lucifer realizes that he was reborn repeating time.

Lucifer thought about the apocalypse, then he focused on finding the "sleeping devil" to fulfill the contract before the evil devil did first.

In fact, the nickname "sleeping demon" is not a real demon. He was originally a human with holy blood flowing in his veins, but unfortunately, that person suddenly left. No one knows the cause, and his body was placed in a coffin in an ancient kingdom in the middle of the forest. Not just anyone can pass through the gate. You have to fight several monsters first.