No. 'Manhwa' is a form of Korean comic or graphic novel, and it's not something that can be eaten in a literal sense. And in the context of leveling up in games or personal growth, consuming a manhwa novel as food is an absurd concept and has no real way of contributing to leveling up.
They would get sick or worse. Since manhwa novels are not food, trying to eat them would cause choking, digestive problems, and could even be life - threatening. There's no way it could lead to leveling up in any sense.
Definitely not. Manhwa comes from Korea. It has unique features that set it apart from Chinese comic works in terms of art style, storylines, and cultural influences.
Sure is. Manhwa specifically refers to comics created in Korea and has its own unique style and characteristics compared to comics from other countries.
Onepunchman is definitely not a manhwa. It's a Japanese manga that features an interesting plot and distinctive characters. The manga has been adapted into various forms of media.