Nizou with the Benizakura


Name: 
Benizakura
Origin: Gintama
Type: Katana
Powers and Abilities: Enhances the physical capabilities of it's wielder, can collect and improve the fighting capabilies of it's user with each battle it has, capable of replacing the arm of it's wielder, will eventually takeover it's wielder and turn them into a grotesque being
Destructive Capacity: At least city block level+, likely multi city block level
Wielder(s): Okada Nizou
Material or Element: Steel, unknown otherwise as it's a bio-mechanical weapon
Needed Prerequisite for Use: A body as it eventually takes over it's host
Notable Attacks/Techniques or Alternate Forms: