Buso Haki, also known as Armament Haki, is a type of Haki in the popular anime and manga series One Piece. It allows the user to create a protective aura around their body, which can be used to attack or defend. The Buso Haki Sub Trait is a special ability that can be unlocked by certain characters in the game Aut, which allows them to further enhance their Buso Haki.
To get the Buso Haki Sub Trait in Aut, the player must first have a character that is capable of using Buso Haki. Once they have a character that can use Buso Haki, they must then complete a series of challenges in order to unlock the Sub Trait. These challenges can be found in the game’s Training Grounds, and they will test the player’s skill in using Buso Haki.