Jao Kun Do

Jao Kun Do (脚功道（ジャオクンドー）) is a martial art based on leg attacks. It was first seen used by Bluegilly in the battle royale at the Corrida Colosseum.

Overview
Jao Kun Do is a close range attack-based fighting style in which the user swiftly and quickly move their legs so fast that the foe can not even predict where the kick will land.

Bluegilly's movement of his legs are so rapid, he was able to create afterimages in their wake to confuse his foes and then attacking with such force that the foes describe it as a steel whip.

Trivia

 * The katakana (ジャオクンドー) is derived from the Chinese pronunciation of the kanji (脚功道) in name of this martial art in Hanzi (Jiao Gong Dao) and both translate into English as the same thing ("Leg Technique Way").