MUGEN ZANGEKI

Mugen Zangeki is one of the most unassuming, yet deadly melee type zanpakutō known. With the name meaning "Infinite Slash", Mugen Zangeki is owned by Head Captain Saito. Mugen Zangeki takes the form of a young child with blonde hair and headphones, but still boasts immense power on its own. Upon activation of Shikai, Mugen Zangeki takes the form of a wooden training bokken, with the phrase "Yūjin to teki" written on the hilt. Mugenkūchū here has the power to cut through any physical matter, as well as blunt itself to apply deadly bludgeoning force.

In Bankai form, this spirit becomes Mugen Zangeki: Wakareru Genjitsu, Infinite Slash: Divided Reality. In this form, Mugen Zangeki looks much older as a spirit, still looking human but more athletic. The appearance of Mugen Zangeki changes to a long nodachi with a golden dragon as the tsuba, with strange ripples around the guard and blade, and in some places it looks almost transparent. At this point, Mugen Zangeki has the ability to cut through the non-physical.

Mugen Zangeki's final form is Bankai Fusion, the merging of Arata's soul with that of his spirit. This form is called Mugen Zangeki: Inga no Shiroiakuma. In this form, Mugen Zangeki takes a very ethereal appearance, dressed in all white with white hair and burning white wings from its back. Physically, Arata's apprearance changes, dressing him like a traditional samurai and creating wide fractures all around him, signifying the fabric of reality becoming unstable and shattering all around him. Mugen Zangeki's true power comes out, the ability to cut through the web of causality iself. This power is overwhelmingly unstable and dangerous as it can completely cut off any and all possible futures and pssiblities from the point of contact, completely deleting reality itself at its worst.