*1221/4/20 [[Emperor Juntoku]] is forced to abdicate and is succeeded by [[Emperor Chukyo|Emperor Chûkyô]].
*1221/4/20 [[Emperor Juntoku]] is forced to abdicate and is succeeded by [[Emperor Chukyo|Emperor Chûkyô]].
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*1221/7/09 Emperor Chûkyô is replaced by [[Emperor Go-Horikawa]].
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*1221/5/14 [[Emperor Go-Toba|Retired Emperor Go-Toba]] gathers warriors at Kyoto.
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*1221/5/15 [[Fujiwara no Hideyasu]] leads a raid on the home of Kyoto ''[[shugo]]'' [[Iga Mitsusue]]. *1221/5/19 [[Kamakura shogunate|Shogunate]] receives notification of the beginnings of violence in Kyoto.
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*1221/5/21 Shogunal forces are dispatched to Kyoto.
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*1221/6/05 [[Takeda Nobumitsu]] leads 50,000 shogunate warriors to victory against 2000 under [[Ouchi Korenobu|Ôuchi Korenobu]] near the [[Minokamo, Gifu|Ôido]] crossing.
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*1221/6/06 Shogunal forces under [[Hojo Tokifusa|Hôjô Tokifusa]] and [[Hojo Yasutoki|Hôjô Yasutoki]] rout Imperial forces at [[Sunomata]].
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*1221/6/13-14 Imperial forces defeated at [[Battle of Uji (1221)|Third Battle of Uji]]. Kyoto falls soon afterwards to shogunate forces, and many [[yashiki|mansions]] of samurai and ''[[kuge]]'' are destroyed.
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*1221/7 Emperor Go-Toba is exiled to [[Oki Island]].
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*1221/7/09 Emperor Chûkyô is replaced by [[Emperor Go-Horikawa]] and exiled to [[Sado]].