Following the destruction of the Hojo clan in 1590, Tomoharu served Hideyoshi TOYOTOMI and after him, began working for Hidetsugu TOYOTOMI at the rate of 1000 koku.
天正18年（1590年）北条氏滅亡後は豊臣秀吉のち豊臣秀次に1000石で仕える。