Inspired by a rather beautiful piece on DeviantArt.
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After making sure that the crazed princess wasn't going anywhere, Katara took off at a dead sprint toward Zuko. Please let him be alive, she was chanting desperately in her mind. She tumbled to her knees next to him. He groaned and the waterbender breathed a sigh of relief. He was alive! But not for long if she just sat there. She turned him over on his back, grunting with the effort required to move him, and was met with the acrid smell of burnt flesh. She drew all the water she had in her pouch into her hands and almost dropped it in her haste. You won't do him any good if you can't concentrate, she chastised herself.
She placed her hands on the wound and concentrated every ounce of her power into healing him, trying to ignore the tears streaming down her face. There was too much damage to heal immediately, and it might take him several weeks to recover completely. But she was almost certain he would live. She drew her hands away and allowed the water to run down his sides, into the sand.
The prince drew a shuddering breath, and Katara released the one she'd been holding. His eyes fluttered open, and before she could even register the impulse, she had grabbed his head and was kissing him over and over, his cheeks, his nose, his eyes, his scar, and he was kissing her back. He was making the oddest sounds, and the vague thought that she was probably hurting him crossed Katara's mind. She kept kissing him.
Eventually, reason returned to the pair and they stayed there, too exhausted and hurt to move.
"You're alive," Katara said. Her mind was completely taken over by that one reality. He smiled and tried to raise his hand to her face. Seeing that he couldn't, she clasped it in her own.
"We're alive."