Morimasa continued joining various battles, including the Siege of Tezutsuyama Castle in Echizen Province (against Yoshiaki ASAKURA) in 1570, the Battle of Yasugawara (against Yoshikata ROKKAKU) and the Battle of Makishima Castle (against Yoshiaki ASHIKAGA) in 1573, and performed distinguished war service.
元亀元年（1570年）の越前国手筒山城攻め（対朝倉義景）、野洲市河原の戦（対六角義賢）、天正元年（1573年）の槇島城の戦い（対足利義昭）などに参加、戦功を挙げた。