He served for the Rokkaku clan first; After the clan was conquered by Nobunaga ODA, he served for Nobunaga second; after Nobunaga died due to the Honnoji Incident, Nagatoshi belonged to Katsuie SHIBATA's family third; He was given 3000 koku (koku is a unit of volume and 1-koku of rice grain is 180.39 liter) and appointed Karo (chief retainer) by Katsuie.
初め六角氏に仕えて、織田信長に六角氏が滅ぼされたのちは信長に仕え、本能寺の変ののちは柴田勝家に属し3000石を与えられ家老となる。