The hoko, swords, bows, grip (sumo) are described in "Kojiki" (The Records of Ancient Matters) and "Nihonshoki" (Chronicles of Japan), which are probably the oldest history books of Japan.
日本最古の史書といえる『古事記』や『日本書紀』に、矛、剣、刀、弓、捔力（相撲）などの記述が見られる。