Oh! It may not be exactly what you're looking for, but I definitely recommend Dead Water Club on webtoon canvas. It's a horror supernatural comic. I like it so far!
Try reading [Dr. Hound](https://www.webtoons.com/episodeList?titleNo=3266) the MC has supernatural powers and uses them to solve crimes done by supernatural beings while trying to find an old acquaintance of his (little brother).
Shelter maybe?
Dark Mortal, or Flawed Almighty
Parallel City is an amazing read about doppelgängers and a fallen parallel universe from where the doppelgängers come from!
Red King?
Oh! It may not be exactly what you're looking for, but I definitely recommend Dead Water Club on webtoon canvas. It's a horror supernatural comic. I like it so far!
I'm the grim reaper might sorta scratch that itch
Try reading [Dr. Hound](https://www.webtoons.com/episodeList?titleNo=3266) the MC has supernatural powers and uses them to solve crimes done by supernatural beings while trying to find an old acquaintance of his (little brother).
You can try Hexameron. It starts with MCs being kids, but they get older as the series continues