Devil Cycle

Ten centuries ago, an angel and a devil fell in love. In order to be with the devil forever, the angel broke the treaty and sat on the throne of the king. When the devil knew it, he was very angry, so he swore to be used as a human being and seal his memory. Now, the angel found the devil, but the devil fell in love with someone else. An angel can only be a silent guardian... The devil broke through the seal and became entangled again in two reincarnations.