Xiao and aether were best friends from childhood, although they hid it from the world. Aether was an angel's prince and xiao was a demon's prince. Their fathers were worst enemies. But now Aether and his father were invited to hell to discuss something... "I propose to live in peace and stop the war. To bond our kingdoms ather and xiao will get married." xiao's father said. Xiao and aether were told to go hang out so adults could discuss the details about the wedding.