What is shunsui?

Shunsui Kyōraku is a fictional character from the anime and manga series "Bleach." He is a captain in the Gotei 13, the organization of soul reapers responsible for protecting the human world from evil spirits. Shunsui is known for his laid-back personality, love of sake, and skill in combat. His weapon is a pair of traditional Japanese swords called katanas, which can transform into various forms. Shunsui is respected by his peers and has shown great leadership abilities, but he also has a mysterious past that is gradually revealed throughout the series.