Yamato

Vergil's signature weapon.

Description
A Devil Arm named after a death god in the shape of a Katana that serves as Vergil's main weapon. It is one of the weapons left to the demonic brothers as keepsake from their father, being the sister sword of Dante's Rebellion.

It is imbued with the power of separation, being able to cut through almost anything not imbued with demonic power, even the cutting through nothingness itself to create distortions in space.

History
The Dark Knight Sparda close the demon world away using his power, and transferred it into his sword, the Force Edge, to ensure the seal wouldn't be broken. Then, he sealed the rest of his power into Yamato and Rebellion.

TFR/Season 2
After Todd Howard acquires the Qliphoth's fruit and becomes the new Demon King, Dante and Vergil make their way to his domain, The Throat of the World, where they ultimately defeat the fiend and Vergil uses Yamato to separate his demonic and human halves.

TFR/Season 6
After Vergil and Vorgin end up fused together, they are drawn by The Three Kings temptation of power and kidnapped. The Kings employ the demon's very own Yamato to divide him into three: the weakened Vergil as he was before the fusion, Vorgin's angelic half Vorgine Angelo, and Vorgin's demonic half M'Rizen.