The air in the Southern Air Temple smelled of incense and age.
Aang had always loved that scent of sandalwood and something sweeter, like the memory of fruit left too long in the sun. It clung to the stones, to the woven mats, to the very bones of this place that had once been his home. Now it clung to him, too, as he sat cross-legged before the statue of Monk Gyatso, his eyes closed, his breathing slow and deliberate.
He was sixty-six years old … and he was dying.
The healers said his body was giving out—that the century he'd spent frozen in that iceberg had taken more from him than anyone had realized. The Avatar State had kept him alive, had preserved him, but it had also carved something vital out of his very bones.
Such a clinical explanation for the end of one’s life.
"Father?"
He opened his eyes. Tenzin stood in the doorway, his young face caught between the solemn duty of a son and the barely concealed terror of a boy who knew what was coming. He was only thirty-five, still so young, still learning, still growing.
Behind him, Aang could sense the others. Katara, her presence a warm current in the quiet temple air, her healing hands now helpless against the tide of time. Bumi and Kya, their grief already a palpable thing, sharp-edged and unformed. Pema, holding baby Jinora. The Air Acolytes, hovering at the edges like nervous doves.
"Come in," Aang said, and his voice surprised him with how much he sounded like a tired old man.
Ugh.
"All of you."
They filed in slowly, respectfully, arranging themselves in a loose semicircle around him. Katara took his hand, her fingers cool against his fever-warm skin. She didn't cry. She had shed her tears in private.
"I'm not afraid," Aang said, and meant it. "I've lived more than most people could imagine. I've seen the beginning of a new era. I've watched my children grow into people I'm proud of." He looked at each of them in turn, at Bumi's trembling crooked smile, Kya's steady gaze, Tenzin's fierce determination.
"I've been loved. That's more than anyone has the right to ask for."
"Dad," Bumi started, his voice cracking. "There's still so much—"
"I know." Aang squeezed his son's hand. "And you'll handle it. All of you. Together."
He wanted to say more. Wanted to explain that he could feel the pull of the Spirit World already, the soft whisper of previous selves calling him home. Roku would be there, and Kyoshi, and Kuruk, and Yangchen, all the faces he'd known across ten thousand years of memory.
Still there was a whisper of doubt despite his calm demeanor.
A whisper of possibility.
What if?
The thought had haunted him his entire life. Every step of his journey, from the moment he'd woken in that iceberg to this final breath, he had carried the weight of the Air Nomads like a ghost he couldn't outrun.
Their faces appeared in his dreams.
Gyatso's kind eyes, Pasang's stern disapproval, the other children who had stopped playing with him once they learned he was the Avatar.
All of them gone.
Because he hadn't been there.
If only I'd stayed. If only I'd been stronger. If only I'd known.
He'd made peace with it, or tried to.
Guru Pathik had taught him to let go, to release his attachments, to understand that guilt was just another form of selfishness. And Aang had believed it, had internalized it.
But belief and feeling were different things. The guilt had never truly left. It had simply... settled. Become part of the background noise of his existence, like his own heartbeat or the rhythm of his breathing. Always there. Always waiting.
He could see Katara's tears now, finally falling, could hear Tenzin's choked whisper of "I love you, Dad." He returned the words, felt them leave his lips like birds taking flight.
And then the light consumed everything.
He expected the Spirit World. Expected to feel the cool embrace of that other place, to see the faces of his predecessors, to finally rest.
Instead, he felt small.
No, not small.
Compressed. Folded in on himself like a lotus closing for the night. There was warmth all around him, a liquid warmth that pulsed with a rhythm not his own.
He could hear something, a thrumming, a beating, a song without words.
A heartbeat.
His own?
No. Someone else's.
He tried to move and found he couldn't. His limbs were too weak, too new. He tried to open his eyes and found only darkness, but a darkness that held the promise of light just beyond.
What's happening to me?
The warmth around him shifted, contracted. He felt himself being pushed, squeezed, drawn toward a light that grew brighter and brighter until—
Air.
Cold air on his skin for the first time. Light flooding his eyes, overwhelming and bright. Sound crashing over him, voices, exclamations, a woman's cry of effort and relief.
"He's beautiful," someone said.
A woman's voice, young and trembling. "He's perfect."
Hands lifted him, cradled him against something soft and warm. A heartbeat, the same heartbeat he'd felt before, but closer now, more intimate.
He tried to focus his eyes, to see her face, but everything was blurry and indistinct. Shapes and shadows. Colors he couldn't name.
He tried to respond, to speak, to tell them who he really was, what he carried. Only a small, reedy cry emerged from his throat.
The woman laughed softly, exhaustion and joy tangled together in the sound. "He's vocal, isn't he?"
Aang felt a large, gentle finger trace the curve of his cheek.
Slowly, painfully slowly, his vision began to sharpen. The blur resolved into shapes.
The most he could see were gray eyes, like his. Like his, the ones he'd had before.
No.
Not like his.
Like an Air Nomad's.
The realization hit him like a thunderclap, and for a moment he forgot to cry, forgot to breathe, forgot everything but the impossible truth unfolding around him.
These people, they had gray eyes. The shape of their faces, the color of their skin, the way his mother's hair fell in soft waves around her shoulders...
The room around him, he could see more of it now, as his newborn eyes adjusted to the light. Woven tapestries on the walls, depicting sky bison in flight. Incense burners shaped like clouds. A window, open to the night air, through which he could see stars scattered across a familiar sky.
The Southern Air Temple.
Tears welled in his eyesbaby's tears, but fueled by a grief that was a hundred years old.
His mother lifted him higher, pressed him against her shoulder, and began to hum. An old tune, one Aang hadn't heard in lifetimes, a lullaby Monk Gyatso used to sing, about the wind carrying you home no matter how far you wandered.
Gyatso.
The name sent a spike of pain through his chest. Gyatso, who had died surrounded by the bodies of Fire Nation soldiers, fighting to the last. Gyatso, whose skeleton Aang had found in the ruins of this very temple, a century from now.
Not anymore, he thought fiercely. Not this time.
He didn't know how this had happened. Didn't know what power had reached across time and death to grant him this impossible gift. But he knew, with the certainty of technically a hundred and sixty-six years of hard-won wisdom, that he would not waste it.
The Fire Nation was coming. He didn't know when but the attack was coming. The genocide was coming.
And I will be ready.
He couldn't move. Couldn't speak. Couldn't do anything but lie in his mother's arms and cry and blink at the stars through the window but he would train earlier. Harder. He would find allies before the war began, would warn the other nations, would prepare defenses that had never existed the first time. He would save Gyatso. He would save the other children. He would save everyone.
He had saved everyone before and he would do it again.
His mother's humming shifted, softened, as if she sensed his distress. She rocked him gently, back and forth, back and forth, and despite everything despite the weight of two lifetimes pressing down on his tiny, newborn frame Aang felt himself begin to calm.
He closed his eyes, let the darkness take him, and dreamed of wind.