There are a lot of cut scenes on each arc, I won't go over those it would be very painful.

Anyway, book 8 was cut almost entirely, in particular Welf, Lili and Syr stories, and the whole thing about Rakia. Only the last chapter is adapted, which is the trip to Edas Village, and even that as been twisted by the evil JC staff. This was supposed to happen between season 2 and 3.

Then there's book 15, that follows directly season 4, which is skipped entirerly, besides a scene in ep1 of season 5. And even that has been adjusted.

That said, book 8 and 15 are "light" reads, meaning that they are a collection of stories about each character. But besides that, they also gave some important information and world building.

Adapting all of them would have been hard since there isn't much continuity between each story, but the missing information really hurts the anime watchers.

@Hurricane951

Thank you for your answer, the reason I asked is because I want to read it but don't know where to start, I will start reading vol 8,15. By the way, are there any trivial but interesting stories to read/know? As a beginner LN reader, there are so many things I want to know, please give me your recommendations🙏, I am very grateful to you

@Hacked54 It depends on what you want to know. I'm not a light novel reader but I read all the volumes of the main series and sword oratoria up to vol 12. I don't know what you mean by trivial, but I think that in general LN are pretty easy to read, as the english is really basic and there's not much need to concentrate.

I began reading MS after watching the anime. I think it is good because you kind of know how to the story will go, but there's a huge amount of detail and context that will make it much more consistent than the anime version. A lot of things that in the anime are not covered, they are well explained in the books.

If you don't want to reread the same story you saw in the anime, you could with Sword Oratoria. If you saw the anime, don't panic. It's true that it sucks, but it is also true that 50% of the stuff on the big screen is totally made up by JC stuff. SO is a good story, it follows the events of the Loki familia at the same time the main story progesses, and it has bit of a darker tone.

Then if you want really short things, you could go with Astrea Records, the various Familia Chronicles and the short stories collections. I didn't read any of those, so I can't advice you about these.

Like was mentioned, most of Volume 8 and almost all of 15 were skipped, which again they were primarily a compilation of short stories focused on the characters anyway. They aren't too big of a deal at being missed in the general story for the anime, but 8 does have alot of good character development moments, and 15 features the origin stories for most of the main characters, so it's worth checking out.

In terms of the rest of the story in the LNs, the anime pretty much adapts everything else. Obviously, by virtue of it being a novel, you're going to get far more detail in how events are described and such when you read it yourself, but in terms of scenes and plot beats mostly everything is there. The biggest omission that they definitely should've kept is probably the Denatus scene in Volume 4, in which we see the Gods' naming of the levelled up children (they did at least include the second Denatus in Season 4).

If you're interested in Sword Oratoria, the best bet would be to check out the manga, since it honestly even surpasses the LN in terms of execution, which how much they add and its art style.