Heartwarming: The Dragon King's Temple

  • Chapter 3: After Toph wakes up from a nightmare, Zuko not only comforts her but also (despite being sore and desperate for sleep) joins her to sleep on the floor where she can see. Toph decides he's the best big brother ever and if Azula doesn't want him she's calling dibs.
  • Chapter 11, when the kids from Avatar finally meet up and have a group hug.