At this point the Murakami and Ogasawara finally entered the fray, and Murakami Yoshikiyo succeeded in defeating Shingen at Uedahara (1548), but Shingen regrouped and went back on the offensive. Identifying Yoshikiyo as the greater threat, he decided to concentrate his initial efforts on the weaker Ogasawara, and in 1550 he seized their principal castle at Fukashi, in modern Matsumoto, forcing their daimyo Ogasawara Nagatoki to flee and seek sanctuary with his ally Murakami Yoshikiyo at Katsurao.
As the battle raged on, Murakami and Ogasawara ultimately entered the fray, with Murakami Yoshikiyo emerging victorious against Shingen at Uedahara (1548). However, Shingen regrouped and launched a counterattack. Identifying Yoshikiyo as the greater danger, he shifted his focus to the weaker Ogasawara clan, capturing their main stronghold in Fukashi (1550) and forcing Nagatoki to flee and seek sanctuary with Yoshikiyo at Katsurao.