Zatôichi (座頭市), also known as Zatoichi: Darkness Is His Ally, Zatoichi: The Blind Swordsman and Shintaro Katsu's Zatoichi, is a 1989 Japanese Chambara film directed by and starring Shintaro Katsu, who also produced and co-wrote the screenplay. It is the twenty-sixth entry in a series of films featuring the blind swordsman Zatoichi, released 16 years after the twenty-fifth film in the series Zatoichi's Conspiracy (1973). The main character is based on a fictional character, a blind masseur and swordmaster created by novelist Kan Shimozawa and set during the late Edo period.