Finding something to eat and drink probably wouldn't be a bad idea. The injured dork sitting with Ken hasn't done either or slept since he became human two days ago. Not that he is going to admit that out loud without a little prodding.

What Diarmuid does do is wince slightly. Even though the hit is light, it is still close to his wound. He's not sure if Ken did it on purpose to prove his point or on accident, but the point is clear nonetheless, "I...know. The plan was originally to have Waver return the favor I paid him when his powers were gone, but...then everything went so wrong."

He takes a long breath and closes his eyes. Nice cryptic statement and he's not explaining. So kind of him...