For novels like " The Nephilim King's Butler ", I recommend you to watch " Battle Through the Heavens ". This was a very popular fantasy novel that told the story of a young man's growth. He experienced various challenges and battles in the process of pursuing power. There were many wonderful plots in the novel, including magical techniques, powerful enemies, and complicated interpersonal relationships. This novel was also very popular and had a large readership. It could be said to be a very classic fantasy novel.