The Mogami clan before long came under the umbrella of the Date clan, becoming a Kairai (Puppet); however, it gradually recovered its independence, and expanded its territory to Dewa province under Yoshiaki MOGAMI, which caused a fierce conflict with the Uesugi clan over the Shonai region.
最上氏もやがて伊達氏の傘下に組み込まれ傀儡化されたが、次第に独立を果たし、最上義光の時に出羽に領国を広げ、庄内地方をめぐり上杉氏と激しく抗争した。