斎藤一
Being fascinated by the Shinsengumi, Watsuki designed the characters by basing their characteristics to that of the real Shinsengumi members and also used fictional representation of them and other historical characters from the Bakumatsu period of Japan. The historical characters were considered to be a hard task by Watsuki. Due to problems with the characterization from Sagara Sōzō, Watsuki decided to illustrate Saitō Hajime in his own style avoiding the historical figure. He felt very good with Saitō's character having noted he fit very well in the manga. However, Watsuki mentioned that many Japanese fans of the Shinsengumi complained about the personality of Saitō, as he was made sadistic.