Transcendency

Transcendency (ちょうえつ Chouetsu) is an application of Busoshoku Haki that was invented and then popularized by Satsujinki of all people.

It consists of forgoing the imbuement of the exterior of one's body in favor of the imbuement of the interior of one's body, a supermajority of one's musculoskeletal system to be precise. The resultant hardening of one's muscles will augment their compressive strength to the point where their every movement will be several times more energetic than they were before the occurrence of the hardening; however, it should be noted that the inexperienced will suffer from an encumbrance that'll hinder overall maneuverability.

Only those practitioners of Transcendency who have become accustomed to the encumbrance it inflicts upon them to the point where they can retain their usual amount of maneuverability are allowed to refer to themselves as being a Transcendent (ちょうえつじん Chouetsujin). And these individuals are considered to be some of the most physical capable within the entirety of the world.