When Moritsuna and his old brothers fled to the residence of Shigekuni SHIBUYA who had taken the side of the Taira clan in the Battle of Ishibashiyama, Shigekuni welcomed them, sheltered them in a warehouse and offered hospitality.
盛綱兄弟は石橋山で平氏側であった渋谷重国の館に逃れ、重国は喜んで盛綱らを迎え倉庫に隠しもてなした。