Summary: Being a demigod wasn't on Percy Jackson's bucket list, to-do list or any lists for that matter. Sure enough, he also didn't plan on having a soulmate who hates his guts with a passion burning more than that of Apollo's hotness (not his idea, honestly, not even his by one bit) and being forced to search for a stupid Book of Cassandra, just because he's a son of some bigshot jerk. Percy surely didn't plan these things, but it seemed as though Fates liked to weave their own way.

Who the eff is Cassandra anyway?

PROLOGUE

SALLY JACKSON whimpered in pain just as the first contraction started. Her hands were shaking and sweaty as she tightened her grip on the sheets, pushing with all her might. The fluorescent light hanging on the ceiling glared at her, as if judging her for all her actions. Sally quickly dismissed the thought as a grave, annoyed voice jarred in her mind.

"Hurry up, girl. We have more pregnant women waiting outside."

Sally bit her lip and apologized. "I'm sorry. I'm just—I'm not used to—"

"I know," the midwife cut her off, impatiently. She fixed Sally with an appraising glare. "God, you're only what? 19? 20? Come on, more pushing, less talking."

The words of the midwife slapped her in the face, hard but Sally accepted it calmly. She had long knew the results of her actions, perhaps way even before she did them, yet she regretted nothing. If she was given the chance to turn back in time, she would still choose the same fate, the same man, even if she was to suffer the consequences again and again.

Sally thought about her baby, her baby boy and she pushed again with a renewed vigor. When she was only a few seconds away from passing out, aloud, resounding cry broke out in the room. The midwife took the baby carefully, cut the umbilical cord and wrapped him in a clean, white cloth.

The baby didn't stop crying and Sally didn't either. Tears of joy overcame the exhausted look in her eyes, as she took the baby from the midwife and gazed at the boy in her arms. For one moment, the midwife smiled at her, the previous condescending glares and judging look disappeared from her eyes and were replaced by a look of fondness.

"Thank you. Thank you so much," Sally croaked out through her tears, as she squeezed the midwife's wrist carefully.

The midwife just smiles and wiped the tears and sweat from Sally's face. "Where's your husband, dear? He ought to be around at this moment."

Sally shook her head wistfully. "He's not coming. He's—"

Just then, a figure stepped in from the door, looking hurried and disheveled himself. The man wore a floral beach shirt and Bermuda shorts, with flip flops adoring his feet. His gaze travelled across the room until it fell on Sally's. He strode forward and reached her in a few steps.

"Poseidon, I—"

"Are you her husband?" the midwife asked.

Poseidon nodded. "Is she—are they both okay?"

"Yes, if I say so myself. She's just a bit winded, right now. Although you might want to be earlier next time, leaving your girl in labor isn't a good thing. But the good news is, you have a healthy baby boy."

Poseidon then looked at the baby on Sally's arm—their baby—and he asked, "May I?"

"Of course."

He carefully held the baby, who has now stopped crying. The baby was looking at him, and he wanted to laugh because of course—he has his eyes.

The midwife looked at them for a few seconds before rushing out. "I'll leave you two then. Congratulations."

Poseidon was still cradling the baby in his arms when he noticed Sally staring at them. He asked why.

She laughed lightly. "Nothing. It's just that he looks just like you. He inherited almost every single thing about you."

He chuckled. "He might have, but he got your nose though. But the thing is, I can feel that he has your heart, and that's what matters the most.

Sally bit her lip and smiled at him, fondly. "Thank you for coming."

"I should've been earlier."

"It doesn't matter."

Holding the baby in one arm, Poseidon gingerly reached for Sally's hand. "Sally, you know that I won't be able to stay any longer. I'm not going to be around his life. This might probably be the last time I'll see him. I hope you understand that."

"I know. And I do understand. I knew ever since the moment I signed up for this," Sally said as she looked up at him. "What shall we name him?"

"It's your choice."

She fumbled with the sheets in her hand. "I—I want him to have the best life I could give him. I want him to have a fate worthy of a good man. Worthy of a hero."

"Perseus," Poseidon whispered. "Perseus Jackson."

"Yes," Sally nodded in assent. "Perseus Jackson, our baby boy."

Sally was still watching Perseus—Percy sleep when she felt Poseidon's hand on hers. She looked down to see a golden coin on her palm, a coin that she hasn't seen before.

"Take it," he said. "That's a drachma. Give it to Perseus when he reaches 17 and send him to The Olympus Institute. The demigods there will know what to do. It's the best path for him to take. Promise me, Sally."

"I promise," she repeated.

Poseidon dropped a kiss to her and their son's forehead, before caressing he cheek. "Don't worry. I'll watch you both even if I'm away. And I love you both. Don't forget that."

Sally nodded and closed her eyes, feeling his lips brushed against her cheek, lightly.

When she opened her eyes, he's gone, and there's only nothing but a thick air of longingness filling the entire room.

Author's Note: Hello readers! Here I am again, back with another story. Although this is completely different from the other fics that I've written, considering this is of the same Greek gods universe but with added soulmates, and not at all human au. This is why I'm struggling to fit my writing style and for the plot to be more dense, and I'm not greatest writer there so please help me. Although the plot will revolve around Greek mythology, I might have to alter some facts and create new stories to fit the story better. I might also decide not to alter those if I can help it and I will have to assure you that if I do, it wouldn't be drastic (like Athena being the goddess of love or something, surely not that).

Please, please do review and tell me what you think, if you liked that start and looking for more, and if you think this is going for something, because I sure have a planned plot going on my mind.

As always,

ThisIsAwesomeness