Maybe there isn't a need to say anything at the moment. Braig certainly doesn't seem to be up to saying much of anything at all as he finishes taking a few practice swings with it. Admittedly, he doesn't let it go, but that's mostly because it's still too new for him to want to let it disappear into other-space that Keyblades go when they aren't in use.

Eventually he manages to find his tongue again, although he's still nowhere near as talkative as he normally is.

"...Thanks."