Anju to Zushioumaru is an anime film that premiered in summer 1961.

About the production: the film runs about 83 minutes and its current status is "finished".

Its main genres are fantasy, with themes such as Historical, Slavery, Animals and Coming of Age.

On AniList, Anju to Zushioumaru has an average score of 60%, an average score, and appears on 1,568 users' lists.

After their father quarrels with local military men, Anju and Zushio are forced to flee, but they are captured and sold into slavery. When their mother dies, they are sold to Sansho the Bailiff, a cruel man who subjects them to hideous torments. While Anju falls into a lake and is transformed into a swan, Zushio escapes and after being adopted to a nobleman grows to a young man. He will then fight to defeat the evil Dayu and free all the slaves. (Source: AniDB)

Official synopsis from AniList.