... [Roku just takes a deep breath as he settles back in his seat.]

I was getting to know Zuko better back then. At some point the conversation went to my friend...Sozin. He said a lot of things I couldn't believe Sozin would do and...how my own best friend would leave to me to die one day. That really upset me, hearing someone talk about a good friend like that.

[And having somewhat experience it because of that one experiment, he can't really deny it will happen now...he then remembers how he got out of that state] Katara was there to help me out of it too.