Well, the character development in Mushouku Tensei light novel is really remarkable. The main character undergoes a significant transformation throughout the story. His journey from being one type of person to evolving into a more complex and morally - ambiguous character makes it very engaging. It shows how the experiences in the new world shape him in different ways.
In the Mushouku Tensei light novel, Paul Greyrat is also a significant character. As Rudeus's father, he has his own story arc that intersects with Rudeus's journey. His actions and decisions have an impact on Rudeus's development. Lilia, a maid in the family, also has her own part to play in the complex web of relationships and events within the story.
One unique feature is its complex character development. The main character goes through a huge transformation from a loser in his previous life to a powerful figure in the new world. Another aspect is the detailed world - building, which includes various magic systems and different races.
The Mushoku Tensei light novel is over. It completed its run, leaving fans with a complete and immersive story. However, there might be spin-offs or related works in the future.