*[[Ashikaga Yoshikatsu]] is succeeded as [[shogun]] by [[Ashikaga Yoshimasa]].
*[[Ashikaga Yoshikatsu]] is succeeded as [[shogun]] by [[Ashikaga Yoshimasa]].
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*An official envoy from [[Joseon Dynasty|Korea]] is kidnapped in the [[Seto Inland Sea]] on his way back from the capital.
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*[[King Sejong]] introduces the Korean phonetic alphabet [[Hangul]].
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*The number of ships sent by [[Tsushima]] annually to Korea is increased from the previously standard twenty-five to fifty by the [[Kakitsu Treaty]]<!--嘉吉条約--> (K: ''Gyehae'' Treaty).