Manhwa is the general term for South Korean comics and print-cartoons that’s the country’s equivalent to Japan’s manga. There are plenty of anime series that are completely original productions, but by and large there’s a tendency to turn to successful manga for source material. The biggest anime usually build upon their manga’s existing fandom and there’s been a heavier push to widen the net of content and also turn to manhwa for inspiration.
Source：https://www.cbr.com/manhwa-potential-anime-adaptation/
