Career
He was the nominal ruler controlled by Hōjō clan regents. He was the father of his successor, Prince Morikuni. Prince Hisaaki was the son of Emperor Go-Fukakusa and the younger brother of Emperor Fushimi.
The years in which Hisaaki is shogun are more specifically identified by more than one era name or nengō.
Shōō (1288–1293)
Einin (1293–1299)
Shōan (1299–1302)
Kengen (1302–1303)
Kagen (1303–1306)
Tokuji (1306–1308)
Enkyō (1308–1311).