was a after Kakitsu and before Hotoku. This period spanned the years from February 1444 through July 1449. The reigning emperor was .
Change of era
- 1444 : The era name was changed to mark an event or a number of events. The previous era ended and a new one commenced in Kakitsu 4.
Events of the Bun'an era
- 1444 (Bun'an 1, 1st month): Yoshinari made his first visit to Kanrei Hatakeyama Motokuni; and on this occasion, all the avenues along the route to and from the meeting were highly guarded.
- 1444 (Bun'an 1, 4th month): The inhabitants of the eastern part of the capital and the western part of the capital each demanded exclusive rights to sell the dregs remaining from sake brewing. Crowds gathered at the Shinto shrine, Kitano Tenman-gū. Kanrei Motokuni sent troops to arrest the troublemakers, but they all escaped after having reduced the temple and much of western Kyoto to cinders.
- 1446 (Bun'an 3, 11th month): The shōgun received a patent from the emperor by which he learned that his name of "Yoshinari" had received Imperial approval.
- 1448 (Bun'an 5, i2nd month): The emperor moved in procession to visit his father; and the entire route was guarded by the troops of Hosokawa Katsumoto.