Oh my heart... the picture is already so wonderful, and when I read the description, I literally cried. You're right, we always will carry those needs inside us, no matter how old we grow... and that's not a bad thing. That's what people (and characters) like Iroh are for.
Thank you for making this beautiful series!
Such a beautiful, touching moment! There is actual warmth radiating from this picture, along with peace and as you write - closure. Also, I like the fact that even though you used so many colors here, they create a nice sync.