A/N: Hey guys, so this is an idea that I had a while back, but I couldn't figure out how to write it until now. I always knew that I wanted to write a fanfiction where Percy and Annabeth had a daughter, but I never knew how to write it. That is until I had the idea to do a series of one-shots covering her life through a bunch of separate events. This is more of a test chapter to see if anyone is interested in this idea, so this chapter is really short and more of a chapter to set the rest of the story off. So if you guys enjoy this chapter, however short it may be, then please leave a review, follow, and favorite and I'll know so that I can post future chapters. And now without further ado, the first chapter of Worlds Collide.

Disclaimer: I own nothing besides Cassie and parts of the plot line that you don't reconize.

"Mama?" a nine-year-old Cassiopea Jackson asked causing Annabeth to look up from the current structure that she was designing for Mount Olympus.

"Yes, Αστεράκι?" Annabeth asked in a soft voice as she gave her daughter her full attention.

"When do I get get to learn to fight?" Like you and daddy and Uncle Jason and Aunt Piper and Aunt Hazel and…"

"Do you not like your karate classes?" Annabeth asked, cutting off her nine-year-old daughter as she listed off members of her family. Her very large family.

"No, no, I like them it's just," the blonde haired girl quickly reassured her mother. "they're really easy and I'm already a black belt and I wanna fight off the monsters too!"

Annabeth sighed and ran a hand through her identical long, blonde hair.

She and Percy had tried to keep the away as many monsters as possible and their friends helped, but there was only so much you could do when you were the descendants of two major gods and you weren't living in one of the two camps for demigods.

"You don't need to fight, Αστεράκι, we have that covered. As for your classes being too easy, maybe you should focus on school instead," Annabeth ended hopefully. Just like her and Percy, Cassie also had dyslexia and ADHD, so it was understandable that she wasn't the best student at school, but Annabeth was still hopeful.

"It's hard, momma, the letters, they get all mixed up," the young girl complained softly, sea-green eyes cast down in sadness.

"I know, baby," Annabeth cooed before giving in. Just like with Percy, she couldn't resist her daughter's adorable green eyes. "How about next time we go to camp, we see if you can do some of the basic sword training. Is that okay?"

"Really?!" Skye asked, her bright green eyes suddenly shining again with excitement and hope.

"Yes, really," Annabeth replied, amusement coloring her voice. "I'm sure Chiron would love to have you training at camp. It would give you something to do as well so that you're not complaining of boredom ten minutes after we arrive."

"Hey!" Cassie mock-shouted. "I don't complain after ten minutes! I wait at least twenty!"

"Okay, twenty minutes after we get there," the older blonde teased with a small smiled before she reached out a hand towards her daughter. "Do you want to help me with the project?"

Cassie was the perfect mix between Percy in Annabeth in their opinion. She had her blonde hair and Percy's sea-green eyes as well as slightly tanned skin. Besides appearance, she was still just like her parents. Cassie loved architecture and reading greek books like Annabeth, but she also loved anything that had to do with the ocean.

"Yeah!" the nine-year-old cheered before abandoning her half-completed homework on the floor.

"I thought you'd say that," Annabeth said to herself through her smile as her daughter sat down on her lap. "Now, what do you think?" Annabeth gestured to the new throne room that she was currently designing.

"I like it, but what if…"

Annabeth leaned back, content to listen to her daughter happily babble on about ideas for Mount Olympus's throne room.