The devil in manhwa can take many forms. It could be a traditional evil character with horns and a pitchfork, or it could be a more symbolic representation of evil or temptation. It all comes down to the imagination of the author and the message they want to convey through the story.
To survive, you should build alliances with the right characters. Also, stay away from obvious traps and don't trust everyone easily. Keep a low profile when necessary.
The novel I recommend to you is The World's First Magic Academy. In this book, there's the number one master of the academy with a golden spear and the enemy faction of the ten demon heirs. Moreover, in this novel, the academy's number one had once saved the protagonist, but he could not defeat the enemy's First Devil Son. I hope you like this fairy's recommendation. Muah ~😗
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.