This is so sweet!

can you write a second one?

It is a little ironic that you're having a bit of time travel tense trouble, and not in the classic sense of "what will have happened," but in terms of "will wasted" - the future tense "will waste" is more appropriate for the dialogue. There are also a few words missing in other places - the description of Opal's flight suit has all the colors, but none of what they're on, for instance. But despite these, it's a cute concept for how the Gaang found the rest of the sky bison and a bittersweet revelation for Aang.

Time loops one of the most confusing things in the world.