I have been searching for forever to find the name of a anime series/ movie that I saw more than 20 years ago. Here goes nothing!
The series/ movie is about a little boy monkey (kind of like the monchichi monkeys) with brown fur. He is very rude and I remember that nobody likes him except for a little female monkey with white fur. Then there is this old wise monkey that puts a golden diadem on the head of the rude little monkey to teach him a lesson in humbleness and kindness. He is also put in some kind of (tree)cage. The female monkey keeps visiting him and keeps bringing him food, even when it starts to snow. He tells her to stay away, even though he kind of likes her, because he doesn't want her to go through all this trouble for him. At the end of the series/movie the little monkey is now more humble and nice to everybody and the golden diadem is removed from his head.
The picture above is how I picture the old wise monkey, but this picture could be from another series/movie.
I also remember that there was another character. He was more human, like a tiny childlike demon-boy with a horn on his head. At one point he was riding a horse, but not on the back of the horse, but upside down on the belly of the horse. At the end of the series/movie, this character also became more "good". I don't remember if there were human characters involved in the series/movie.
Ok this sounds like a weird kind of shroomtrip, but this is all I can remember. I really hope that someone recognizes some of this stuff and can give me more information about it! Thanks a million in advance!