It was the fourth invasion of the day, the corps were already worn out. Eren and Mikasa were deployed near the exterior wall of Ba-Sing-Se to fend off titans.
"Mikasa! Look out!" Eren yelled at Mikasa who barely dodged the foot of a 10 meter class titan that was rushing towards her.
"You basterd!" Eren cussed and flew high above the titan with his maneuver gear, doing a 180 degrees flip and finally, unleashing a huge lightning through the titan's neck, making it drop to the ground and disappear.
"Eren you dumbass!" she said and a slab of rock knocked Eren off his feet and flat on his butt.
"I had this!" he said and got up, panting.
"We need a refill here!" he said on the radio channel and stated their location.
After a few minutes a short person with a bald head and arrow tattoos on his body showed up.
"Heya guys" he said.
"hurry up Connie" Mikasa said as the bald air bender filled their tanks with air.
"Here you go. You two, ask Armin for a treatment when you are done, you look like you could use some 'Armin care'" he said and flew off on his glider.
"Just a few more" Eren smiled to Mikasa who returned a blank look.
"An easy one" she thought to herself while charging forward at the 3 meter class titan with Eren, jabbing her hands into the air and capturing the titan's legs with huge rocks. Eren took out his blades and prepared for the kill, however, in the last moment, his leg hit a rooftop and made him lose control, ending up smashed at a wall by the titan. The titan broke the boulders Mikasa trapped his legs with, and kicked her with great force. Eren opened his eyes just to see the bleeding Mikasa in the shadow of the huge foot that was hovering above her.
She smiled, "I will die by a 3 meter class, pathetic" she said as the giant foot was plummeting towards her.
"Mikasa!" Eren's scream was heard all the way to the upper ring.
And then, light. Bright blue light. All the titans stood still, looking with fear at the pillar of shining light that was visible from the southern water tribe itself .The titans began to flee, and all the soldiers, wherever they were, bowed down.
Somewhere, deep within the fire nation, a vile grin was showing on the calm face of the tyrant. "Petra, prepare the squad. The Avatar has returned." He said, staring at the blue pillar.
"But Fire Lord Levi, I-" she started to say. He turned his face to her and looked her in the eyes.
"Do as I say" he commanded and returned to stare at the ascending pole of light that was now fading.