抄録
After winning the grand battle of Fujikawa between the Genji and the Heike, Minamoto no
Yoritomo, the leader of the Kamakura shogunate, rewarded the warriors who served under him with
honryō-ando （securing their lands） and shin’on-kyūfu （distributing the lands of the defeated
enemies to them based on their achievements on the battlefield） . Honryō-ando and shin’on-kyūfu
were thus the basis for the introduction of the gokenin system in the Kamakura shogunate, wherein
land was used as a medium for strengthening the master-servant relationship between Yoritomo and
his gokenin. According to a recent academic theory, the Kamakura shogunate began with Yoritomo’s
establishment of a base for political administration in Kamakura in October 1180. Therefore, the Kai
Genji clan’s victory over the kokuga forces of Suruga and Tōtōmi, which were on the Heike side at the
battle of Harutaji, although a preliminary skirmish six days before the battle of Fujikawa, was historically significant. The Kai Genji clan’s achievement
