When Mitsuhide started serving Nobunaga ODA, Mitsuharu, following Mitsuhide, fought battles in various places and distinguished himself with military exploits, which led him to be granted 50,000 koku at Tanba Province.
光秀が織田信長に仕えると、光秀に従って各地を転戦し武功を立てて丹波国に5万石を与えられた。