He laughs outright. Open curiosity is refreshing, as is the boy's informal behaviour.

"It's 'really hard to do it'. Luckily for me! Wounds from demonic beasts like these are unpleasant, but..." He gestures to the scar, which may have even faded a fraction more during their conversation.

In fact, as far as he's aware, the only thing that will manage it permanently is being beheaded by the enchanted sword sheathed at his hip. His cockiness has grounds, at least! That's one piece of information he would rather not share with his comrades.

"I would rather take the blow than see a mortal struck down, and here we are."