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.
One thing that makes only manhwa stand out is its cultural influences and the way it presents social issues. It offers a fresh perspective and diverse range of genres that you might not find elsewhere.
The raw version of 'One Night Only' manhwa could potentially be available on specific manga-sharing communities. However, there's no guarantee of the quality or legality. It's always recommended to purchase or access it through official and authorized means.
Not necessarily. How things are done in a manhwa can vary greatly. It could be similar in some cases, but different in others due to artistic choices, story direction, and audience preferences.