Type
Manga
Score
7.8
Publication Status
Finished
Users Tracking
100
Chapters Available
354
Every 1000 years, 100 demon children are sent to Earth to compete in a battle to become king of the Demon World. Each demon is paired with a human partner who is given a spell book of a specific color. The human can cast the demon's spells through their book. If a demon's book is burned, they disappear and return to the Demon World. The last demon remaining becomes the king.