The Satake clan, who was opposed to the Gohojo clan, joined the battle because they had a diplomatic tie with Hideyoshi, while the Edo clan, as the Gohojo clan's ally, did not join.
佐竹氏は後北条氏と対立し、秀吉と結びついていたことから参陣したが、後北条氏と結んでいた江戸氏は参陣しなかった。