Manwa or webtoon?

go for both, first the manwa, then this

Since you're reading online just go for the webtoon- the manhwa is literally just the webtoon with colors and scrolling

Meant webtoon is the manhwa*

Plot is the same. But art gives different feeling. Go for both and choose what will you reread at least couple of times in the next years (๑•ㅂ•)و✧.

The manwha gives you Ewon's inner thoughts and will give you a deeper understanding.