In Japan, gokenin (an immediate vassal of the shogunate in the Kamakura and Muromachi through Edo periods) were gathering in Dazai-fu, including the Shoni clan and Otomo clan, mainly those from Kyushu region.
日本側は少弐氏や大友氏をはじめ九州の御家人を中心として大宰府に集結しつつあった。