[Ren's fingers twitch momentarily at the question, though it's in the manner of someone shown something confronting they didn't expect. He has used a sword, technically speaking, but the circumstances in which he's used one isn't something he thinks he can discuss right now without letting a lot more of his feelings slip than he'd like to.]

I know a little bit about how to use one, but they're not really used in my world except for people who fight for sport. If I did more things like that, though, I probably would need to tie my hair up for it...

[Safe enough answer - he prefers not to lie outright if he doesn't have to, just half-truth, and this is enough of the truth to be accurate while not having to touch on the sensitive parts of the subject.]