His strength limited by the magical crest with which he was born, Mathias, the world's most powerful sage, decides reincarnation is necessary to...

One hundred years ago, a grave tradition was born in a land where demons live among people: a human must be sacrificed to the King of Beasts. But...

When the intimidating Rintaro meets the open-minded Kaoruko, the unlikely duo grows closer. The issue? Their neighboring high schools hate each other.