One of a kind (Female Percy Jackson X MARVEL)

Chapter 1

Sighing, he tiredly sat down. His eyes roamed around the room, but his mind was elsewhere.
Today was a slow day. Having returned from a mission yesterday, everybody wanted to have the next one relaxing.
He, instead had to stay in the lab, for the doctors wanted to heal him up.
His mind didn't let him rest though. He was remembering a certain person.
A certain black haired girl that he adored and so terribly he missed.
Suddenly, he put his hand in his t-shirt's breast pocket searching for a certain possession of his.
The photo was worn out from being used over time, but a prized memory of her.
Before all this happened, she was there.
There for him when he needed it; to support him, to lift his spirits and make him laugh.
He remembers her making him laugh, doing silly faces when he was down.
Her contagious laugh and smile.
That corner of her lips lifting when he made a particularly bad joke.
He craved for those times.
When he didn't have a care in the world and could simply enjoy being near the green eyed beauty.
They became quick friends, immediately liking each other's quirks and antics.
Everybody knew that they were the only ones that could stop each other. But, if they came together with mischief; havoc would wreck upon all.
Her personality drew him in; as did his for her and over time, he came from liking her, to loving her.
But he was too scared to tell her, knowing that she never did return his feelings; being not as confident as she was.
She was, in his opinion, a pure ball of joy, giving off sass like she does light and hope. She was special, he always knew that. But when she told him her secret, she became even more amazing and cooler.

FLASHBACK
The boy at the middle of the bed, sitting cross legged, was ranting about something. And that something was something the girl didn't really know.
Recently, her mind was occupied. Filled with the same question and doubts.

'Do I tell him my secret?'

No doubt, he was somebody she trusted with her life. But would he see her differently? Would he be scared of her?
Would he want to never see her again?
"I have something to tell you", stopping his droning, she straightened up with a frown on her face.
Knowing that was a sign of seriousness, something big, direly important she was going to tell him, he didn't press her; choosing to let her gather her courage and thoughts.
Sitting patiently (even though he was not a patient kid), he took her hands in his, pressing gently and rubbing their backs with his thumbs, silently telling her that he was there for her.
She took the final courage and spilled what has been keeping for five years, since they met at the young age of eight, " Do you remember all those Greek myths I've been telling you?".
Whatever he was expecting, it definitely wasn't that. Remembering all those myths that she had drilled into his mind and all the references she did daily, he nodded.
"First, I know that you aren't going to tell, but swear in the river Styx that you won't" she pleaded with those green eyes of hers.

Murmuring the oath, a thunderclap followed and she sighted in relief.
" What I'm about to tell you, many don't know and many think it's rubbish; but I swear it's true and I haven't gone crazy or something"
"All those myths, aren't really myths. They're true. Every single one of them. The gods exist. They were immortal before and immortal means immortal; meaning they are still here. Remember when I told you about demigods?", she quickly ranted trying to tell him everything before he pushed her away: trying really hard to convince him.
Nodding his head, she continued, "Well they still come down from Mount Olympus and they still have children with mortals, resulting in people like me."

~People like her. Does she mean...~. Realisation flooded him as his eyes widened. Staring at her with suspicion, he simply said, "prove it."

She smirked and raised her hand up, wriggling her fingers and successfully confusing him, in time for the water to come out of the cups in the nightstand.
Seeing his mesmerised, and certainly not disgusted or freaked out face, she took his hand and pulled him to the sea outside her cabin in Montauk; passing her mother's room, down the stars, past the living room and through the sand, about 20 meters away from the shore. Sitting on the sand at the bottom of the sea and realising that he cannot breathe underwater like she does, she created an air bubble around them.
"So cool!"
A smug look overcame her face, while he was almost bouncing from excitement.
Getting comfortable in the air bubble, Percy started to tell him stories, sometimes a question from him, those she gladly answered.
At first she was sceptical: telling somebody as important to her as he was, was a really big deal. But funnily enough, her doubts did never take place. They got washed away with the flow of the conversation that lasted hours upon hours to end.
FLASHBACK END

The years following weren't easy, for either one. He knew of the prophecy hanging on her head; the one that talked about the demise of either her, or Olympus.
It still sent chills down his back thinking about it:

A half-blood of the eldest gods
Shall reach sixteen against all odds
And see the world in endless sleep
The hero's soul, cursed blade shall reap
A single choice shall end their days
Olympus to preserve or raze.

(For those that don't know the Great Prophecy)

He couldn't do anything to stop it. And that's what hurt him the most. Seeing her helpless face, when she is  such a strong person.
She told him that prophecies almost always had different meanings, but this one was clear enough.
He didn't want to lose her.
At the time, he wanted to take her, hide her and keep her safe. But alas, that couldn't happen. Besides there being The Gods that could probably find her in a heartbeat, he respected her choices. And that was her choice: to protect her family and friends. But also him. If Kronos would have won, the Golden Age would return with its brutality.
.
.
.

He respected her choice.
Enough to let her go.
To go to her promised downfall.

But he misses her.
More than anything and anyone in his life.
For she was his angel.
His everything.
His Seph.

Disclaimer:
I own absolutely nothing