Apart from being inconsequential (copyright makes no distinction between products for entertainment or otherwise), this is also incorrect.

Here are just a few examples off the top of my head, to whet your appetite:

- The OG superhero story: https://en.wikipedia.org/wiki/Epic_of_Gilgamesh

- A fairly popular adventure story you might have heard about: https://en.wikipedia.org/wiki/Odyssey

- This one even has "comedy" in its name, if you needed convincing: https://en.wikipedia.org/wiki/Divine_Comedy