Slaying Demon: Ōkami

Interfectum Malus: Ōkami has the shape of a nodachi. According to Continuum Shift, it is made of a metal that negates Ars Magus in a certain distance, explaining why Arakune can be killed by it in Calamity Trigger rather than regenerate after being hit by it. During the Teach Me, Miss Litchi!  episode, Ragna taunts Hakumen saying that it has yet to actually display its power.

As shown in Hakumen's story, he is also able to use Ōkami to directly slash dimensions, allowing him to view other parallel timelines or dimensions. However, it is unclear if this is an ability of Ōkami itself, Hakumen channeling the Power of Order through it, or a display of the Susano'o Unit's ability to slash time.

In the anime, the sword can phase through its sheath, allowing Hakumen to easily draw it for battle.