Tsugimasu was originally a monk of Enryaku-Ji who accepted service with Asai Nagamasa and was given Miyabe castle. He fought in the center of the Asai army at Anegawa but later betrayed Nagamasa and assisted in his downfall in 1573. Tsugimasu came to serve Hideyoshi in a largely administrative capacity, he did take part in the Toyotomi invasion of Kyushu in 1587 and saw battle at Taka castle in Hyûga. Among domestic his duties, he served Hideyoshi as an agricultural daikan and eventually received Tottori castle in Inaba province, which he passed to his son in 1596 and then retired.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005