Well, I think the themes of loyalty and betrayal are likely in it. There are probably characters around the demon lord who are either loyal or might betray him. And the concept of identity is also important. Is the demon lord defined just by his title or is there more to him? Maybe there are also themes related to the struggle between different races, like demons and humans.
Obviously, the demon lord himself is a very important character. Then there might be his loyal servants or followers. Maybe there is a wise old wizard who is either an ally or an enemy. There could also be a brave knight who stands against the demon lord at first but later realizes there is more to him.
It's likely about the story of a demon lord. It might include his rise to power, his battles, his relationships with other characters in the fictional world, such as his minions or his enemies. It could also explore the demon lord's backstory, his motives, and his goals.
Obviously, the demon lord is one of the main characters. They are likely to be at the center of the story, driving the plot forward with their actions and decisions.
The writing style of 'a demon lord's tale light novel' is likely to be engaging. It may use vivid descriptions to bring the demon world to life. The dialogue might be sharp and full of character, helping to define the personalities of the various demons and other entities. There could also be elements of mystery, such as the demon lord's past or hidden powers that gradually unfold as the story progresses.
The thing that makes it stand out is the way it combines fantasy elements with unexpected twists. The depth of the villain's character development is also remarkable.