Lone Wolf and Cub: Sword of Vengeance (Japanese: 子連れ狼　子を貸し腕貸しつかまつる or Kozure Ōkami: Kowokashi udekashi tsukamatsuru, literally Wolf with Child in Tow: Child and Expertise for Rent) is the first in a series of six Japanese martial arts films based on the long-running Lone Wolf and Cub manga series about Ogami Ittō, a wandering assassin for hire who is accompanied by his young son, Daigoro. - wiki