After Nagamasa ASAI lost the Battle of Anegawa against Nobunaga ODA in June 1570, he served Nobunaga and worked to safeguard a barrier located in Suruhari-toge Pass where Nakasen-do Road and Hokkoku Kaido Road were merged.
元亀元年（1570年）6月の姉川の合戦で浅井長政が織田信長に敗れた後は信長に仕え、中山道と北国街道の分岐点の摺針峠の関所を護る。