Gokudera can deescalate now more than he ever could when he was younger and far more stupid. This isn't the same person Zuko and Azula have met. He's trained in keeping an Elite well pampered, and that includes keeping nuisances away. He doesn't think that Zuko II was actually hurting his friend, but still. Better safe than sorry, and he wouldn't dare harm the familiar. So the bubble gently carries it away and he's left looking at Zunyan.

"You're welcome." He answers and creates another bubble, setting it on the ground for Zuko's dragon to climb into if it wants. Or... if it wants to pop the bubble, it can do that, too. Gokudera isn't reinforcing it and Zunyan will be rewarded with a ride if it wants one, or it will pop if there is aggression.

He's ignoring Azula. How dare he? Gokudera will only ruin fun if it's at the expense of someone he cares about.

"Do you want a ride, or to pop it?" He asks the dragon, grinning and welcoming whatever action the dragon will take.