He continued to have a defying attitude like his father toward the bakufu (Japanese feudal government headed by a shogun) after the unification of Southern and Northern Courts, and defeated Morimi OUCHI while allying with Mitsusada SHONI in 1431.
父と同じく南北朝の合一後も幕府に対して反抗的な態度をとり続け、1431年には少弐満貞と連合して大内盛見を討ち取った。