The phrase 'nee enge en anbe full story' is quite mysterious. It could potentially be a part of a fictional story, a title of a local legend that has not been widely known. It might also be a random combination of words that someone created for a specific purpose, like a game, a creative writing exercise or a unique naming for a project. However, without any additional clues, we can only speculate about what the full story could be.
One possible interpretation could be that 'nee' might be a name or a short form in a certain language. 'enge' and 'anbe' could be actions or states. So it could be about a story related to a person named Nee and the actions or states of 'enge' and 'anbe'.
Muzan Kibutsuji in the manga is presented as a truly evil force. He has a commanding presence and his actions drive the plot forward with a lot of intensity. His character design and personality traits make him a memorable antagonist.