One major difference is the level of detail. In the light novel, the author can go into great lengths about the setting, the characters' emotions, and their relationships. For instance, when it comes to the relationship between the main characters, the light novel can explore it more deeply with pages of description. In the anime, it has to convey a lot of this through expressions and dialogue in a shorter time. Also, the light novel might have some side stories or extra details that didn't make it into the anime due to time or budget limitations in the anime production.
In general, the Oreimo anime doesn't cover everything from the light novel. There are certain plotlines and details that are missing or modified to fit the anime format and runtime.
The Oreimo light novel ending is more elaborate compared to the anime ending. The light novel has the luxury of more words to flesh out the ending. It can describe the characters' internal monologues better, which gives a fuller picture of why they make certain decisions at the end. The anime ending, on the other hand, is more of a visual and abridged version. It focuses on the key moments from the light novel ending but may not be able to convey all the subtleties. For example, in the light novel, the descriptions of the characters' final realizations are more detailed, while in the anime, it's more about showing the end result rather than the process of getting there.
In the anime, the story often progresses at a faster pace to fit within the episode limits. So some parts of the plot might seem rushed. In the light novel, the story can unfold more gradually. For example, character development might take more time and be more detailed in the light novel.
In general, the Oreimo anime doesn't fully encompass the entire manga. Some storylines and details might be missing or modified to fit the anime format and pacing.
The story mainly revolves around the relationship between a brother and his sister. There are various comical and somewhat complex situations that unfold as they interact with each other and their friends.
Ayase in the Oreimo light novel is an important character. She is a friend of the main characters. Her presence adds a lot of drama and different relationship dynamics to the story. For example, her interactions with the protagonist often create interesting situations that drive the plot forward.
The ending of the Oreimo light novel is significant as it wraps up the complex relationship between the main characters. It shows the growth and development of their feelings over time, and how they come to terms with their emotions towards each other.