After leaving the temple, he began to carry out important tasks as a retainer for the Mori clan; for example, he joined a troop to hunt down and kill Teruhiro OUCHI who had invaded Yamaguchi City in Suo Province, a former territory of the Mori clan, in 1569.
下山後に毛利氏の家臣としての主要な行動を開始し、1569年に旧領の周防国山口市に侵入した大内輝弘追討に参加している。