So, many people have commented on the fact that Yui and Ui's parents are Air Nomads, but no one commented on this:
"Ritsu, it's only been a couple of days," Mio said. She feinted to the left, then backed and half-turned to avoid a mimed punch that would've been a firebending strike in a real fight. "We just have to be patient."
Is this indicative that Ritsu is a bender? Or are they just playing, rather than sparring? From the rest of the context, I got sparring.
Ebony the Black Dragon
"Life is like an anole. Sometimes it's green. Sometimes it's brown. But it's always a small Caribbean lizard."