The representation has to be pornographic; I should have clarified. That said, "borderline" pornography, including a "chibi" (characters drawn with no definition or detail, no genitalia visible) parody of a famous Japanese print, were prosecuted in Canada[0]. If I could I would link the image in question if you wanted to see just how ridiculous this prosecution was.

[0] https://www.cbr.com/canadian-court-drops-criminal-charges-in...