Cookie Run
I tend to mix Kingdom and Ovenbreak canon, but you'll mostly see Kingdom lore here because it's the one I know best.
“Centuries ago, when the witches still ruled the Cookies and Earthbread was still fresh, magical creatures roamed the land. Graceful and shy, Unicorns were the protagonists of endless tales and legends… Yet one day they were nowhere to be found, their existence now nothing more than a fable.”