[It's too easy for Aang to feel guilty about something, especially when it feels like he's overlooked a friend. But Toph's response does help to lighten up. As tough as the punches may be, he's gotten used to them being a sign of Toph's friendship. He rubs at his arm with a light smile.]

You make a lot of convincing points, Toph! You're definitely welcome to visit and stay with us on the island whenever you want. I'm sure we'll all be the best blenders there are!

And... I'd be glad to train with you more, too! I guess I shouldn't get rusty even in a place like this... Zuko won't have to worry either. I'll make sure he knows the world loves him.