Board Thread:Questions and Answers/@comment-181.28.140.62-20190108090348/@comment-34467294-20190115121727

If you're talking about the section of the sword that separates the blade from the handle its the guard. The one from the manga and novel are the real ones. In the anime the guard was just a remake mainly because they couldn't animate it to be the exact copy to the first. So the Night Sky Sword in the manga/novel is the real version and the one in the anime is a remake.