Busoshoku: Gusoku

Busoshoku: Gusoku (武装色:具足 Color of Armament: Completeness) is an extension of basic Busoshoku Haki, which permits the user to encase their body completely in Haki.

Within the Haki Development System, it is a technique of the 3rd Dan. It is sometimes referred to as "Full Body Buso".

Overview
Capable users of Busoshoku Haki can further extend the reach of their Haki coating, to the point that it can cover all corners of their body. This gives them a dark luster appearance.

This greatly augments their defense and offense, as any body part can dish out an enhanced attack, while simultaneously being protected from attacks. Even sneak attacks may not be as effective. However, concentrations of Busoshoku such as these also weight the user down, decreasing their overall speed.

Furthermore, with quite an amount of Haki being used, the user's reserves are prone to going out faster.

Trivia

 * This technique's name is a fanon rendition, it is not its canon name.