Is Tatsu no Ko Tarou hentai?
English title: Taro the Dragon Boy
No
Rated G (All Ages) on MyAnimeList and not tagged as Hentai.

Movie · 1979 · 1 episodes · G - All Ages
Adventure, Fantasy, Historical, Mythology
Patterned after Japanese art and silk screens, Taro, The Dragon Boy is an animated feature about Japanese mythology and cultures, focusing on Taro, a young boy who has to make a voyage to a distant lake to save his mother, who has been turned into a dragon.
View on MyAnimeListShare
Check another title