Benkei tai Ushiwaka is a short animated Japanese film made in 1939 by Kenz Masaoka. It is based on the legendary encounter between Sait Musashib Benkei, who was collecting swords for the Buddha, and Minamoto no Yoshitsune, who was called Ushiwaka in his youth. (Source: Wikipedia)
Watch Benkei tai Ushiwaka online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.