I mean, "webtoons" aren't really a thing in western culture. You can think of the posts like chapters from a comic. Anyway, here's the latest chapter[0] of 마음의 소리 (The Sound of Your Heart) which is popular. Enough to have its own tv show on netflix.
You can see more of them at comic.naver.com [1]
[0]: https://comic.naver.com/webtoon/detail.nhn?titleId=20853&no=...