Kenshin failed in attacks on branch castles such as Tamanawa-jo Castle and so on, which were conducted at the same time as besieging Odawara-jo Castle, and due to this failure, he was counterattacked by the Hojo clan.
小田原包囲と同時に行っていた玉縄城などの支城攻略も失敗に終わっており、その後の北条の逆襲を招く結果となった。