YMMV / The Masks We Wear (Avatar: The Last Airbender)

• Heartwarming Moments: As a result of Zuko becoming similar to his sister, Azula's usually derisive nickname for him of "Zuzu" changes into an Affectionate Nickname instead.
  Azula: You will always be my little Zuzu, Dragon or not.
• Moment of Awesome: The entirety of the Fire Nation Invasion; Zuko shows how being a Noble Demon makes him no less of a badass than his canon counterpart, while Azula remains as cool and deadly as she always is.
• Moral Event Horizon: Zuko and Azula slay the dragons Ran and Shaw after they judge the siblings 'unworthy' and try to kill them; it doesn't end well. Or for the Sun Warriors for that matter either.

---