Zura is the nickname given to Katsura Kotaro in Gintama, the long-running manga and anime series created by Hideaki Sorachi. Other characters use it constantly, prompting his recurring correction that it is Katsura, not Zura. That running gag made the name familiar even to viewers who know only short clips from the series. Online, the shouted nickname has become shorthand for the joke itself, shared in anime edits, reaction posts and soundboards where fans recognise the reference from a single word and expect the indignant reply that usually follows it.