However, Gifu-jo Castle, where he lived, was besieged in May of the same year by his brother Nobukatsu; when Katsuie, his only hope, committed suicide in Kitanosho-jo Castle, Nobutaka surrendered to Hideyoshi and opened Gifu-jo Castle.
しかし兄・信雄によって同年4月に居城の岐阜城を包囲され、頼みの勝家も北ノ庄城で自害すると、岐阜城を開城して秀吉に降伏した。