"It is with great sadness that I have gathered everyone here. The fire nationis in front of our home to bring destruction to our tribe. Some of you will leave their lives and I will never see them again" Arnook said gravely "I am recruiting warriors for a dangerous mission, everyone who is willing, come forward and recieve my sign"
Sokka immediately stood up and raised his hand.
"Sokka what are you doing?" Katara asked but Sokka just stepped forward and recieved his red sign to his forehead.
Akira clenched his fist in anger. "I will kill every single one of them the moment the night starts" he said darkly and crushed the ice block he was playing with in his hands.
After the war council was over he changed his clothes into his white combat armour and a demon mask made out of alluminium covering his whole face.
The masks was like that of a normal human only with two horns and long canie teeth.
His hood was connected to the mask so it wouldn't budge and reveal his face even in extreme combat situations.
"What's up with the mask?" Katara asked.
"I don't want to be recognized as a waterbender by the fire nation" Akira said and Katara just nodded in understanding "besides it's cool isn't it?"
Then the siege began with the ships starting the bombardment of the tribe.
For now Akira had no choice but to help with defending before it becomes night.
The bombardment continued for the rest of the day leaving the beautiful city completly destroyed.
Finally dusk came and the fire navy paused their attacks. Akira smiled and went to the front of the wall,waiting until it became night.
His plan was simple, dive under the ships, slice open their plating, sining them and drowning everyone that falls into the water.
"Akira, what are you doing?" Katara shouted and ran to him.
Akira just took her arms and looked inside her eyes.
"Don't worry, by tomorrow they'll be gone" he said and jumped from the wall into the water.
The cold water immediately shocked him bit he recovered by using firebending to hold his body warm.
However, with the constant use of his chi he was on a time limit. He thought that he could keep this up for at most four hours.
Using waterbending he shot forward like a torpedo and only broke the surface to catch air every two minutes or so.
He reached the fire nation ships and moved to the backlines.
The last thing he wanted to do was to hurt his father Iroh.
He then started attacking by slicing the plating of the ships letting them slowly sink.
Soon later he heard the alarm bells but he didn't care and moved on to the next ship.
The last ship was now sinking and the personel saved themselves into the water.
But here they were easy prey for Akira.
He just sent a water tendril at them and dragged them down.
It took him a lot of focus to hold everyone down and slice the plating of the other ship simiontaniously but he managed it.
The firebenders were helpless, they couldn't do anything to an enemy inside the water.
Akira didn't even come up to breathe, instead he created small bubbles for him to breathe that he drew from the surface and changed them when they were used up.
His focus wavered, so much waterbending aditionally to the firebending to keep his body warm really put a strain to his mind.
Deciding it wasn't worth it he ignored the fire soliders in the water and just sliced the plating of every ship that entered his vision, carefully sparing the first row of ships.
By now he had propably brought down about half the ships of the fire navy by now.
Deciding to show off a little he jumped out of the water and shot ice spears at the soliders, impaling every one of them precisely in the head.
Then with a wave of his hand he created a high pressured jet of water that cut the whole ship into two pieces.
Firebenders had now apotted him and were shooting fireballs at him from all directions.
He dived into the water again only to raise a giant wave that crashed the ships into each other even flipping one of them over completly.
After this he jumped on the deck of one of the ships and sliced the throat of all the soliders there without them being able to do anything.
They hurled spears and fireballs at him bit with his waterbending technique that was inspired by Ming Hua he moved to quickly for them to even react and before they knew what happened he already beheaded them with a swift movement of his twin daggers coated with water.
Then he raised tiny ice particles and created a deadly blizzard of flying ice shards for everyone who even got near it.
He let it sweep over five more ships killing or fatally wounding everyone on deck and dived into the ice cold water again.
His chi reserves were almost empty now and he was exhausted so he decided to return for now and rest a bit.
With his last chi he shot back to the water tribe, crossing the big wall with a big leap and collapsed.
...
Fire nation solider pov:
All of a sudden a faint slicing sound was heard. Soon later the ships from the back started to sink slowly and the soliders in the water were apruptly dragged down by something.
"Alarm! There is something in the water!" a solider shouted and aimed his crossbow at the sea but there wasn't anything they could see.
Then something white passed them under the water with lightning speed.
"What was that?" one of them asked.
"Looked almost like a...human?" another said and they all got chills.
A second later a few more ships began to sink slowly.
Then a white armoured man with a metal demon mask shot out of the water in front of a nearby ship and threw ice spears at the soliders with lightning speed, piercing their heads in an instant.
It was cold murder, quick, efficient and absolutely brutal.
"This is a waterbender...WATERBENDER ATTACK!!!" a solider yelled.
"This isn't a waterbender, that's a demon I tell you" he shouted in fear "fuck I didn't sign up for this shit. They told us it would be an easy victory! What the fuck is this?"
Then a giant wave appeared in front of them toppling over their ship.
The fire nation solider saw how he fell of the deck into the dark ocean and was swallowed by the giat wave.
He hit his head on the metal wall of a ship and the world became black.