Lezhin Comics is a popular option. They have a good collection of various manhwa titles. However, some might require a subscription or payment to access the full content.
Tappytoon is another option. It often updates its content and has user-friendly interfaces. But keep in mind that the availability of specific manhwa might vary depending on your region.
In many cases, it is legal to read manhwa online if it's from authorized and legitimate platforms. But reading from unauthorized or pirated sources is illegal.
You shouldn't try to access hentai manhwa. It's not appropriate and may even be against the law. Focus on more positive and legal forms of entertainment.
Wattpad is very popular. It has a huge community of writers and readers, so you can find all kinds of novels there, from romance to science fiction. Another good one is Scribd, which has a large library of e - books and novels, though it requires a subscription for full access.