I'm dying.

They've done what they have to do. It's out of their hands now. He wants to sink into the darkness and rest.

No! I won't let you die! I can't live without you. I..love you. I have, ever since you...

That confession changes everything. He must fight the darkness now; hang on, because she needs him, because she loves him.

I...He coughs up blood.

Love...A shallow breath.

You...

She's drawn enough water to heal him now, and he finds comfort in the familiarity of her healing. He knows that they probably can't be together, but he will fight for life because she loves him. But if he dies, he dies knowing that she loves him and that he died saving her. He will die a happy man, but he doesn't want to die. He wants to fight for their love.

The edge of the pain fades. It still hurts, but he can bear it. Blood no longer flows from the wound. She's done a good job. He knows now that they will try to build a future together. They will fight for this love to the end.

After all, they've saved the world. Don't they deserve a little slice of heaven in return?

I know. I love you, forever and always.

I love you too, for eternity.

He knows that his life is coming to an end. The darkness embraces him, hands soft like his wife's. He wants to rest now and wait for her to join him in the Spirit World.

Goodbye. I'll wait for you.

I will see you soon, I hope.

Not too soon.

She hopes that it is soon. They've had a long, happy life together and she cannot bear to be parted from him. Their world is in the safe hands of the Avatar, the airbenders resurrected. Aang himself has grown old, as has his wife. They will pass soon too and she doesn't want to be alone. Now, only the three of them remain. Her native nation is in good hands, as is her adopted homeland. Their son is an honourable man and a great ruler. He will keep the peace.

Not long after, the world enters mourning. The Avatar and all his companions have all passed to the Spirit World. Although some passed many years ago, the world mourns the loss of them all. Their children will hear the tales of their heroics and their legacies will live on.

At the South Pole, a child is born. Her eyes are blue. Her proud parents name her Korra.