Yogen-in Temple was founded and Seihaku (a cousin of Nagamasa and a monk of Mt. Hiei) named as kaisan (founding priest) in 1594 when Hideyoshi TOYOTOMI's concubine Yodo-dono requested that Hideyoshi found a temple in memory of her father Nagamasa ASAI.
文禄3年（1594年）に豊臣秀吉の側室・淀殿が父・浅井長政の供養のために秀吉に願って成伯（長政の従弟で比叡山の僧）を開山として創建。