Demon-Slayer Sword: Black Divider

Anti Magic: Demon-Slayer Sword: Black Divider (魔法『断魔の剣・ブラックディヴァイダー』) is an Anti Magic spell.

Description
While coated in Anti Magic and wielding the Demon-Slayer Sword, the user pushes and condenses the Anti Magic to the edges of the blade. Its size and reach can extend to several times its normal size. After six months of training in the Heart Kingdom, Asta gained the ability to use Black Divider without using his Black Asta form.