The enmity between angels and demons stopped as soon as the demon king just disappeared one day. The only angel did not believe in the death of the demon king. He was looking for him. He promised himself that he would find him and finish him off, no matter what it cost him. After thousands of years of aimless wandering, the angel found a place where he had never been. A dark, sinister forest that has exhausted all the divine energy of the angel, taking away his light and flight. He began to get lost in the forest when he came across a cave. It was the only way to survive the night and the angel entered it...