Just after Harunobu expelled his father, Nobutora, Yorishige SUWA (Sengoku Period), the lord of Uehara-jo Castle, Suwa, Shinano Province, and Nagatoki OGASAWARA who was shugoshiki (post of provincial constable) of Shinano Province, and lord of Hayashi-jo Castle in Shinano Province, invaded Kai Province, but was subsequently beat off by Harunobu.
父・信虎を追放した直後、信濃国諏訪上原城主・諏訪頼重(戦国時代)、同じく信濃林城主であり信濃国守護職の小笠原長時が甲斐国に侵攻してくるが、晴信はこれを撃退した。