What is "bunna"

, also romanized as Bunwa, was a Japanese era name (年号, nengō, lit. year name) of the Northern Court during the Era of Northern and Southern Courts after Kannō and before Enbun. This period spanned the years from September 1352 through March 1356. The emperor in Kyoto was . Go-Kōgon's Southern Court rival in Yoshino during this time-frame was .