((AN: Well hello! Well would would you look at that? It's my first story here. Okay so basically if you are familiar with my dA, you'd know this story. For new readers; I hope you enjoy this story. It is closely related to the books and is my take on how the adventure would've looked like if they had a child of Hades with them from Book 3 to the last. This is a slash fic w/ an OC *multiple; mind you* involved; so if you have a problem against OCs in general, please leave and spare me of your usless griping. Either way, enjoy and feel free to hit that Review button. PLease? PRETTY PLEASE?!))

-A little guide to help you here-
"normal text" = talking
'italics' = thoughts
italics (all words) = Memory or dream sequence; like the ff. that you are about to read.
italics (one or few words) = Emphasis/Sarcasm
bold = Rage

Gamble with Fate

-Prologue: The Lost Demigod-

-Camp Half-Blood, New York 1940-

In the foggy city of New York City, the streets were crammed with a thousand plus citizens; all of which were gossiping about the recent announcement in the news, the start of the Second World War. Men looked forward to get the chance to protect their country, while the women worried about what will become of their husbands in the battlefield. But past the city's walls, hidden in the dense forests of New York was a relatively small camp that only a few chosen people knew about. This was Camp Half-Blood, a camp for demigods; children of the Greek gods came here for protection and to train to defend themselves.

The camp was small but it housed nearly a hundred children, all of which were demigods. Each child was assigned to a certain cabin that represented their parental god, this only happens when their parent actually claims them. If they aren't claimed, they're sent to Hermes Cabin instead. So far the camp only had cabins dedicated to the Olympian gods; the gods didn't make cabins for the minor gods, saying that their children have a smaller chance of getting attacked by monsters compared to children born under an Olympian god. The only cabin in Camp Half-Blood that didn't belong to an Olympian god...was Hades cabin. It was still new, it was made just recently to house only one demigod; only one child of Hades.

Its sole resident was a girl, who had just recently turned 15, named Seria Amagi. The female demigod was from a Japanese family; her mother dropped her off here when a few years back...for reasons she'd rather not think about. Seria was leaning against a tree, outside of camp borders (which isn't allowed supposedly), and stared out at the view of the city. The wind whipped her long black hair back, giving it that smoky effect...which is somewhat of a trait you get when your dad is Hades, God of the Underworld. Her dark grey eyes were narrowed as she looked like she was glaring down at the city, which in fact she was. The "mortals" down in the city were so naive to the danger that this war presents; they think they won't be involved...but she knew better. Since she was a child of Hades, she could already sense the death radiating from the very topic. A lot of people will die from this war, she knew that...and she didn't like it.

Seria sighed, pulling away from the tree and tugging her grey winter jacket closer to her thin frame. Things just weren't going out well nowadays; not only was there a war going on, some of the campers have disappeared and no one has found them for days. "The Fates must really hate us right now..."

"I don't think they'd really cause this to happen just on a whim, Seria."

The girl gasped and whipped around, sliding two rings from her fingers and pressing the gem. Almost instantly, the rings morphed into two identical swords (a present from her father for her 15th birthday), The Gorgon's Eyes; swords with the eyes of a gorgon melded inside, giving the two swords the power to paralyze anyone who stares into the red eyes that were near the hilt of the swords. Seria faced the source of the voice with her weapons drawn...it was Chiron, the caretaker/camp director of Camp of Half-Blood.

Seria let out a sigh of relief and relaxed, her swords returning back to their ring form since there was no danger present. "Chiron," she chuckled, "You should know better than to sneak up on me. You know I could've killed you just now." Like all swords that demigods use, The Gorgon's Eyes were made out of celestial bronze, a material that only harms monsters and other creatures (demigods included) but it cannot harm mortals.

The centaur laughed as he ruffled Seria's hair. Chiron was a centaur, an immortal one; the gods made him immortal so that he could always watch over the demigods that came under his care. The top half of Chiron was human, a man with cream colored skin and long messy hair with a beard to match, while on the bottom...was a horse's body that half was brown and Seria suspected that Chiron's horse half might be a stallion. Chiron was like a father to Seria, though Seria recognized Hades as her father...Chiron has been with her more often than the god.

"Did you need to tell me something, Chiron?" Seria knew he wouldn't seek her out unless he had something urgent to tell her. Judging by how Chiron's body tensed, she knew she hit the nail right on its head, "Come now...you practically raised me, Chiron. You should've expected that I'd figure out how to tell if you wanted to just talk to me or if there was something wrong. Now tell me."

Chiron sighed, shaking his head slowly, "You were always the observant on, Seria. Yes...there is something I need to speak to you about. But..." The centaur trailed off; a dark expression replacing his usual cheery demeanor.

"Chiron?" This was starting to make Seria uneasy, "What's wrong?"

"I need you to go on a quest." Chiron handed Seria a map, "As you have noticed, some of the other campers have begun to disappear without a trace. Some of the nymphs and a few harpies have tracked down some of the possible sources of these disappearances. I need you to find the source and destroy it...and if you can, rescue the campers as well."

Seria grabbed the map and scanned its contents; if these were truly the possible locations of where the missing campers may have gone then this was her only chance of solving this problem. "Okay, I accept."

Chiron smiled bitterly, "I knew you would." He then handed her a backpack, "I already readied your travel pack. It's well-stocked with money, the regular kind and golden drachmas, some food and ambrosia and nectar."

Seria took her backpack and smiled at Chiron, "No need to worry about me, Chiron; I'll be fine. I always return from my quests." She then walked away from the camp director and towards Argus, the "security" of the camp, and tells him that she'll be going on a quest.

Chiron watched as the sole child of the God of the Underworld disappears from view; he was reluctant to give her the quest for he had a bad premonition of what will happen to her. But Seria had always returned from her quests, he really shouldn't worry about her so much...

Little did he know...that that would be the last time he saw her.

The missing campers were found...but their rescuer was lost. One of the rescued campers reported to Chiron what had happened to Seria. The brave demigod had discovered that all the campers had been captured by Medusa, one of the gorgons that Perseus (The well-known Greek demigod hero) had faced off and slain, and set off to slay her once more. Seria had released the few campers that had survived Medusa's torment and ordered them to return to camp, with the help of a Pegasus that Seria had rescued in her journey. Then she ran into Medusa's lair...and never returned.

Chiron mourned the loss of one of his campers and reported her death to Olympus. Hades was angry...but he knew his child would be with him in the end; still, Seria had become a legend in Camp Half-Blood. Her story would be told often during the campfire gatherings and its title was, "The Lost Demigod".