Demon Relics

Demon Relics (魔骨董, Makottō) are items and weapons created in the depths of Demon Realm millennia ago. They vary greatly in terms of appearance, ability, and usage, but all of them are incredibly potent in their own right. It is unknown exactly how many relics still exist today. While relics, like their creators, are usually limited to the depth of Demon Realm, recently they have begun to find their way into the Living World, and into the hands of unsuspecting mortals.