For Dungeonwriter. A Toko fic, showing the awesome power of the merging of like souls, and the final leaving of Sokka's side....
Merging.
When his fire flickered, burning quietly, the embers of his desires feeding hungrily on the oxygen that surrounded them, she could quench it in one move; smothering out the very last of his flames.
But other times, fueled by an unstoppable force, he'd overpower her earthen tent, scorching her to the point of submission... and eventually immersion.
A dance of power that seemed almost endless, and neither could win.
The fire renewed the earth. The earth nurtured the flames.
To Toph, there was nothing hotter than him at his peak. The time of the comet, fighting side by side, using the energies of each other at the fire nation's last stand after being almost crippled at the eclipse.
She could work well under fire, feeling the smoke raise, dusting her face in a black cloud. He could use the earth the gain an advantage. Together, boiling like hot, bubbling pools of lava; they knocked out everything in their path... not just the comet alone lighting their fuel, but the loss of one that meant much to them.
Sokka had been scared of Aang when he fell into the Avatar State (as no one could escape), but he never thought he'd feel this way about Toph... the reflection in her usually dull green eyes dancing with the fire that surrounded them on every side.
"Get out of here Sokka" she yelled, as the young firebender and herself pushed blazing walls further in on the enemy and Sokka was blocking their path.
"I can't leave without you."
In a fury, Zuko turned on Sokka and shot out a fireball his way, not to hit but to reinforce the blind girl's plea.
Sokka looked shocked as the fire grazed him and then flames engulfed the two, too quickly to confirm what was happening; the consummation of forces which would continue to grow until eventually burning out, leaving them both suffocated in each other.
After that, things would never be the same.
...
Coming out of the rock and fire cocoon they had housed in, they both were left almost literally crushed by the others ability.
Her expression, one of wonder at her companion. He, himself was rarely impressed but put a hand on her shoulder as he struggled for breath. "Good job, Toph."
She grinned broadly and for a moment longer than usual, it felt like nothing was left... but them.
(Unbeta'd, but hope you like anyway...)