Many people have talked about parallel framing with Zutara, but here’s one I haven’t seen mentioned before.
Katara facing Zuko with his back turned towards her and facing the camera. The close up of Zuko’s face allows us to know what Zuko is thinking and feeling but the over the shoulder shot emphasizes Zuko’s awareness of Katara - except in the middle shot, in which Zuko does not know that Katara is there.
The effect of this kind of shot is to show the audience that the foreground character is avoiding the background character, or that the background character represents something that they don’t want to face. In the first shot Zuko outright rejects Katara’s help because he’s suspicious of her, and is openly hostile. In the third shot he is similarly suspicious, but not hostile. His expression looks more guilty.
The middle shot is slightly different since Zuko doesn’t see Katara, but the audience is meant to understand that although Zuko has finally embraced his new life, he cannot escape the old one.
This framing is reused later on, except this time with Katara and Zuko switching roles.
This time Zuko is reaching out to Katara, who is the one who looks surprised and conflicted because she knows she doesn’t have a real reason to hate Zuko anymore by the time of “The Southern Raiders” (although her anger at him is justified.)
The purpose of this kind of shot is to expose to the audience something that is hidden (although close beneath the surface) that the foreground character is about to realize. It is particularly interesting that this is used to frame Zuko and Katara’s changing relationship dynamic, to highlight the realizations they make about each other.
Keeping that in mind, then, the last time this shot is used is the lightning scene during the final agni kai.
Zuko turns towards her as she comes into view, the camera revealing the immediate danger to the audience at the same time that Zuko realizes it. This is one of the reasons why this scene is often interpreted romantically, because of the way it’s shot to emphasize Zuko’s realization of Katara, and because of the way that their relationship is framed similarly throughout the show, as something revelatory for both characters.
