Although he might not necessarily be the strongest Shinigami in the Gotei 13 by a large margin, there is no doubt that very few characters in Bleach would be able to last long against Shunsui Kyoraku. One of the longest-serving members of Soul Society's military wing, and its current Captain-Commander, Shunsui's reputation is the stuff of legend, having trained under the Gotei 13's previous Captain-Commander Genryusai Shigekuni Yamamoto.