Japan is a land full of folktales and fairy tales, called 物語 or monogatari. Some are quite common and almost everyday references, whether it be an Okappa printed on a warning sign for a body of water, or a giant statue of Momotaro.
Here’s a monogatari you don’t know-- test your Japanese reading ability and study the words on Skritter!
https://blog.skritter.com/2016/03/legend-kentaro-ケンタロウの物語/