When Rokuhara tandai was attacked by Takauji ASHIKAGA, who joined the miyagata (imperial prince's side), and fell, he received an incorrect report that Nakatoki HOJO was slain in battle in Omi and Tokinobu surrendered to the miyagata.
六波羅探題が宮方についた足利尊氏（尊氏）によって陥落されると、探題北条仲時が近江で討死したという誤報を受けて宮方に投降した。