[It does seem like there's some misalignment of two worlds where materia is concerned. He could launch into an explanation, but Sephiroth is rarely the sort to launch into anything unless it's a battle, so instead he tends to the question at hand with a skeptical underpinning in return.]

Yes. This is Masamune, the sword I’ve used for years.

[It looks like a katana. Especially the hilt that Sephiroth is still grasping onto with his other hand. It’s just a very, very long one.]

It’s never given me issue, not until it met the teeth of that dragon. [Or whatever infallible creature it was. He frowns at the memory.] I don’t want to use anything else, so the faster someone can mend it, the better.