How To Save (Seduce!) Your Villain In A Few Easy Steps; A Guide By Avatar Aang

"Shitty author, shitty novel! Prince Zuko deserves justice!" Aang's famous last words as he took his last breath.

...Forced to read his favorite character's unjust death and being killed after. Aang had had enough when he was yeeted into the same novel he died cursing because an annoying entity called 'The System' thought it would be fun transmigrating him into the most annoying novel he had the misfortune of reading.

To make things worse, Aang didn't become an anonymous NPC, so he could help his favorite character from the sidelines. Instead, he became that damned Protagonist who will end up killing the Scum Villain, Prince Zuko!

......You know what? Let the world burn and the plot go up in flames! Aang was going to give Prince Zuko the happy ending he deserved, one way or another, even if it killed him!

...

Or

A different retelling of ATLA, SVSSS style!