all i know is gone (but i am not alone)

"I want you to make me a promise, Avatar Aang," Katara whispered. This time, when she placed her hand on top of his, he didn't pull away. "When this is all over, when the war is won... Promise me that you'll grieve."

(alternatively: grieving is hard. aang's friends work harder. a series of missing/expanded scenes from a:tla exploring aang's grief through his friends' eyes.)