Breakneck Style (猛烈なスタイル, Mōretsuna Kenpo) is a fighting style invented and used by Kinan after the timeskip of Grand Voyage. It consists of the user moving at near supersonic speeds, then landing strikes that dislodge or shatter the opponent's bones upon contact. It was invented by Kinan after she ended up abandoning her old combat style in favor of more casual clothing.