Once Masamune learned that Kanetsugu NAOE had gone back to Yonezawa after the Battle of Hasedo-jo Castle, he launched a campaign to the Sendo area, and on October 6, Masamune defeated the troops of Uesugi led by Sigenaga HONJO at Miyashiro.
政宗は長谷堂城の戦い後、直江兼続が米沢に帰ったのを見て取ると、仙道方面への侵略を開始、10月6日宮代で本庄繁長の上杉軍を破った。