I was re-watching Machikado Mazoku recently, thanks to my wife who agreed to watch "an anime about the girl with horns". It really is a fun series, suitable for all ages. The art is great, characters are great, what else is there to wish for?
I'm familiar with the manga, and stuff goes real in there very quickly after the anime arc. But we're spared of all that in the series, as well as waffling and dragging of the story.