However, because he continued to be rebellious against Hideyoshi and also because many of his vassals participated in the uprising against Hideyoshi (Unekita-ikki) started by a vassal of the Shimazu clan, Kunikane UMEKITA, Hideyoshi became angry with Toshihisa, and this led Toshihisa to attempt suicide, however, he landed in Ryugamizu as the army of his older brother, Yoshihisa, came surrounding him.
しかし上記のように反抗的な態度を取り続けたことと、同年に島津氏の家臣・梅北国兼が秀吉に対して反乱（梅北一揆）を起こしたとき、その反乱軍に歳久の家臣が多く参加したことなどから秀吉の怒りを買うことになり、兄・義久の追討を受けて自殺しようとしたが、追手が立ちはだかっていたため、竜ヶ水に上陸した。