Yes. My Demon originated from a manhwa and has made certain changes to fit the medium of the adaptation. But the core elements and storylines are drawn from the manhwa source.
You need to focus on the aspect ratio and panel layout. Webtoons usually have a vertical scroll format, so make sure your panels flow smoothly in that direction.
It depends on the terms and conditions you agreed to when you uploaded or submitted your comic to Webtoon. If you didn't carefully read and understand those, it's hard to say for sure.
The key to creating your webtoon comic is having a clear vision. Work on the script, practice your drawing skills, and experiment with different styles. And don't forget to get feedback from others to improve.
Well, it might involve a power struggle between the guy and the demon. Or perhaps it leads to a quest to control or banish the summoned entity. The possibilities are endless!
Well, you could come up with a fanfic that explores the backstories of the minor characters. Discover what made them the way they are and how it ties into the main plot.