Yes, it follows quite closely. The main plot elements are there. For example, Issei's transformation and his relationships with the various female characters are in line with the light novel. There are only some small changes here and there.
Mostly. It has the same basic framework as the light novel. The battles, the power-ups, and the overall structure of the story are similar. But, there are a few things that are different. For instance, some of the side stories in the light novel might not be as fully developed in the anime.
It follows the manga to a considerable extent. There are some differences, but they don't significantly deviate from the main plot.
The Haruhi manga is quite faithful to the light novel. It captures the essence and major events from the source material. Though there could be slight variations to suit the medium of manga, the overall resemblance is significant.
Slayers Evolution is known for its relatively faithful adaptation of the light novel. It maintains the key elements and storylines. Although there are occasional tweaks for animation purposes, they don't deviate significantly from the original.
Yes, to a large extent it does. The anime adaptation of High School DxD covers many of the major plot points and story arcs from the light novel. However, as with most adaptations, there are some minor differences and omissions for the sake of pacing and time constraints within the anime format.
It follows quite closely. The anime of Youjo Senki mostly adheres to the plot and characters of the light novel, with just a few minor tweaks.
It depends. Sometimes it follows closely, but there are also some differences to make it more suitable for the anime format.
Yes, it does for the most part. There are some minor changes here and there, but the main plot and key elements are pretty much the same.
It follows pretty closely. There are some minor differences, but they don't change the main plot and character developments.
Yes, it does. The anime mostly adheres to the plot and key elements of the light novel.
Yes, it does for the most part. There are some minor differences, but the core story and character developments are in line with the light novel.