Hiko Seijūrō XIII (比古ひこ 清せい拾じゅう郎ろう 拾じゅう参さん代だい, Hiko Seijūrō Jūsandai?) is the thirteenth successor of Hiten Mitsurugi-ryū and the sensei of Himura Kenshin in the anime/manga series Rurouni Kenshin. He is the undisputed most powerful character of Rurouni Kenshin. While incognito as a potter, he assumed the alias Ni'itsu Kakunoshin (新に津いつ 覚かく之の進しん?).