19 Years ago, the world was in chaos and war was raging. The former crown prince fell in love with the demon king. During the past 19 years, the four realms fought, the ten major competitions, the war between the demons, and the former crown prince fell. The ten major families decided on the source of harmony. 19 Years later, the previous loopholes appeared bit by bit. Everything should have changed when the demon king came out of seclusion...
Concept: Not sweet or cruel, the ending depends on your mood