日本 镰仓时代  (July 9, 1249 AD～October 4, 1305 AD)

Tomb：	龟山陵
Start End Reign 1259 AD 1274 AD 正元 March 26, 1259 AD April 13, 1260 AD 文应 April 13, 1260 AD February 20, 1261 AD 弘长 February 20, 1261 AD February 28, 1264 AD 文永 February 28, 1261 AD April 25, 1264 AD 

　　Emperor Kameyama a series of imperial system is called Daigakuji system.
　　1274, the shogunate's behest, Kameyama Emperor gave way, 8-year-old came to the throne Prince Prince sein, was later Emperor Uda. After the deep grass Uehata see Kameyama Uehata to his son inherited the throne, not mind the taste, they expressed their dissatisfaction to become a monk. In 1289, is a deep straw system after the Emperor Fushimi establish his son as crown prince, Emperor Kameyama and disappointed, and it brings up a monk's magic, just walk away.