[ Zuko's always a little sad, it's true; but that doesn't stop him from laughing at Hikaru's honest joke, because they are friends, and Hikaru's snide humor reaches Zuko well. The prince chuckles, despite how it hurts his face to smile, he can't help but laugh. It is just like him to bum him out, yeah, probably. What'd he expect? ]

I mean, it's not like we got off on a happy note. A professional hitman attacked me and I just survived, like, dozens of dynamites. Sorry to bum you out, buddy...