Poor Arche hasn't had that many chances to set things on fire outside of the spiders. It may be she enjoys it.

Regis' mask falls away some then as he gives Cor a genuine smile in hopes of putting him at least a little bit more at ease, "I will be as cautious as possible. After all, I just got off bed rest. I have no wish to return to it anytime soon."

It may sound like a joke, but Cor of all people should understand what it is like to be forced to be in bed when you want to be elsewhere. Even a Lucis Caelum can only sleep so much.