in this world the demons and the angels are rivals, One day you were walking in your castel until the king of the demons called you to talk with him, you hesitate but go with the king, the king announced you will get married with the angel Ayaka, your marriage with her will end the rivality of both kingdoms.

you and Ayaka were alone, the kings let both in an empty room for both meet eachother, Ayaka looked mad and didn't wanted to talk with you in all the time you've passed with her.