There are likely to be other important characters such as the people who train the assassin, his targets, and perhaps some allies or friends he makes along the way. However, without reading the entire light novel in detail, it's hard to name every single main character.
The 'the world's best assassin light novel' might have a distinct writing style. It could use vivid descriptions to bring the action scenes to life. The story may also explore themes such as morality and loyalty, as the assassin has to make difficult choices in a world full of danger and intrigue. This adds depth to the narrative and makes it more than just a simple action - based story.
I'm not sure exactly as I haven't read it, but likely the main character is the world's best assassin. There may also be characters like their mentors who trained them, or their targets that they are assigned to eliminate.
One key feature is the unique concept of an assassin being reincarnated. It often brings in elements of mystery as the assassin has to navigate a new world with their old skills. Another feature could be the character development, seeing how the assassin's personality changes or adapts in the new life.
In this novel, the reincarnated assassin is the central character. Alongside, there could be characters who are part of the new world order. For example, there might be a powerful noble who has an impact on the assassin's new life. There may also be other assassins or fighters who cross paths with the main character and either become friends or foes depending on the situation.
The Assassin's Creed series's stealth assassination style was more fully utilized in the ambitious generation, but it could not be said to be the best generation in the series. Each generation had their own characteristics and styles, and the ambitious generation had made great contributions in terms of character description, plot, and world view. In addition, the Assassin's Creed series had a rich gameplay that included not only stealth assassination but also combat, exploration, political conspiracy, and many other elements. Therefore, it was impossible to simply judge which generation was the best.
The world - building in 'The World's Best Assassin' light novel is really good. It creates a vivid and detailed setting for the story to unfold. There are different factions, rules, and powers related to assassination that add depth to the narrative. Also, the characters are well - crafted, each with their own motives and backstories.