In 1399, he sided with Yoshihiro OUCHI who brought Oei War but he lost to the army of Muromachi bakufu (Japanese feudal government headed by a shogun) in Sakai City and went missing.
1399年応永の乱を起こした大内義弘に組するが、堺市で室町幕府軍に敗れて消息不明となった。