Armament Haki, known in Japanese as Busoshoku Haki, is one of the three forms of Haki introduced in Eiichiro Oda's One Piece manga and anime. It lets a user create invisible armor around themselves or their weapons, later shown visually as a glossy black coating in the anime. As One Piece edits spread across video platforms, fans isolated this activation noise as a shorthand for hardening and resolve. The V2 label suggests this is a cleaner second upload of a popular version used in fan edits.