After he was appointed as the heir to be the head of the family, he took part in, together with his father Motochika, the conquest and siege of Odawara in 1590 and the Invasion of Korea from 1592.
長宗我部家の家督に決定した後、父・元親とともに天正18年（1590年）の小田原征伐、天正20年（1592年）からの朝鮮出兵に参加する。