Lone Wolf and Cub: Baby Cart at the River Styx (子連れ狼　三途の川の乳母車, Kozure Ōkami: Sanzu no kawa no ubaguruma; literally "Wolf with Child in Tow: Perambulator of the River of Sanzu") is the second 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.