It is said that after Toshiie was hostile toward Hideyoshi in the Battle of Shizugatake, and also after he yielded under Hideyoshi as a vassal, they kept secretly the personal friendship such as cauterizing moxa each other.
秀吉と敵対関係になった賤ヶ岳以降、家臣として秀吉に下った後も二人で灸をすえ合うなど友人関係を内密で続けたという。