Shōyō

"You think the dead we loved ever truly leave us? You think that we don't recall them more clearly than ever in times of great trouble? Your father is alive in you, Seireitou, and shows himself plainly when you have need of him."

- Shōyō Shakyamuni

Shōyō Shakyamuni (수오 당신은 석존, Shakyamuni Shōyō) was the sensei of Seireitou Kawahiru and Rikuto Nakamura. Following the Seige of Soul Society, he was locked up in a maximum security prison under the dictator of Soul Society.

Personality
Considered the most powerful Shinigami (in his time) in the world, Shōyō was benevolent and eccentric, an archetypal good shinigami. He almost constantly gave off and aura of calmness and composure, rarely displaying intense emotions of anger or fear; instead he appeared content and whimsical throughout. Yet despite his benign nature, it is said that Shōyō was the only shinigami that Myoken ever truly feared.

As a supremely talented shinigami, Shōyō showed numerous examples of extraordinary powers. His abilities as a shinigami were combined with a kind of cunning and subtlety of mind that allowed him to comprehend human nature and turn the better aspects of humanity (trust, love, and friendship) to Myoken's disadvantage in particular. Yet despite his many talents and accomplishments, Shōyō was never in the least arrogant, self-important or pompous and in this he stands above the other great shinigami of his day. Despite this fact, however, Shōyō was quite aware of the fact that his power outmatched everyone else's and would not hesitate to remind others of this fact, if the situation demanded it.

Trivia

 * Shoyō Shakyamuni is heavily based on my head instructor, Gyo Sun Seo, or simply "Mr. Seo".