A certain Okamoto Daihachi, who was a servant of Tokugawa Ieyasu's close advisor Honda Masazumi, was sent to Harunobu to congratulate him on his triumph against the Portuguese. Okamoto was also a Christian and he was entertained by Arima Harunobu with a feast. During the banquet, Okamoto told Arima that through his influence upon his master, he could help Arima recover three districts ("gun" (郡)) that were lost to the Ryūzōji clan over the preceding years. Arima believed him and sent him payments of gold and silver to lobby for him in the Tokugawa government.