 In 1842, he was presented to the Shōgun Tokugawa Ieyoshi in formal audience, who a week later presided over his "genpuku" ceremony.At that time, his name was changed from Toshizumi (利住) to Yoshiyasu.In May 1864 he was sent to Kyoto in Nariyasu's place as leader of the Kaga samurai assigned to guard the Imperial Palace, however due to his poor health he preferred to stay at a small Kaga exclave located in Omi Province, far from the danger.