Katara is separated from her friends, and so she's left to travel the earth kingdom on her own. She stumbles across Zuko, who is similarly travelling on his own. They decide that pairing up and travelling together would be best
this drawing started off as tv crowley and aziraphale dressed like their book cover counterparts, but then I got carried away and it turned out... not being exactly that anymore 🤷🏻♀️
so... late 80s/early 90s au? (aka. literally the book lol)