: A retired, battle-scarred high-ranking slayer—often a former Hashira—who survived encounters with Upper Rank demons but stepped down due to permanent injuries.

As the official Cultivator of Thunder Breathing, Jigoro would serve as a natural contemporary or rival to Tenrai-Sensei. Where Jigoro taught discipline and standard foundational forms, Tenrai-Sensei might represent the raw, unforgiving side of the elements.