[action]
[She's not sure why he has to yell out the name of the trick he's doing, but she's still impressed. How does he get it back under his feet after doing that?]
You are very good, Kid... -kun. [It's a small difference, but an important one. There's a certain intimacy involved in that honourific that she hasn't used with anyone here, not even Tsukasa. It seems appropriate, though, if they really are boyfriend and girlfriend now.]