Demon-Slasher Katana

The Demon-Slasher Katana (斬魔の刀) is an Anti Magic Weapon. Originally Yami Sukehiro's katana, the sword is transformed by the Anti Magic in Asta's devil arm when Yami passes the sword to Asta.

Description
The katana is summoned out of an opened grimoire, inside which it is stored in the form of writing. The user can easily summon the katana at will without consuming any magical power.

Like the other Anti Magic Weapons, the katana is capable of cutting through magic and spells with its edge. It is also capable of releasing flying slashes of Anti Magic. When used in Unite, these slashes damage only the intended target and do not cause any harm to what the user wants to protect.