When the Ikeda-ya incident happened, Okizawa, who belonged to the troops led by Isami KONDO of Shinsengumi, rushed into Ikeda-ya with them, was seriously injured, and died at a stationing facility of Shinsengumi.
池田屋事件の際、局長近藤勇の隊に所属して池田屋に突入し、重傷を負い、屯所にて死亡。