Author's Note: I decided to post this fanfiction in honor of the release of Percy Jackson: The Sea of Monsters (which was so much better-made than the first one, and I think all us Percy Jackson fans agree on that). I originally had abandoned this story after I was halfway through the first chapter, but seeing The Sea of Monsters got my creative writing juices flowing again. Hooray! Please keep in mind that I will be sticking more to the books than the movies, and that this story is set soon after the end of The Last Olympian. The Heroes of Olympus stories will not be taken into account (although they are fantastic!)

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1: Beginning

I've always considered myself a normal girl.

At least, as normal as someone can get when they live with alien frogs. If you set aside the invasion plots, modifications of our house, and the occasional attack from the Keron Army, I lead a fairly average life.

I'm being sarcastic, of course. You just know your life is weird when you've gotten turned into an adult version of yourself or a dog. (By the way, I've experienced both.)

But I try to think of my life as, at most, entertaining. Try to downscale it. Then it seems a bit like every family deals with Keronians and Angols and ninjas and invasions- not just ours. But ever since Momoka's end-of-school pool party, 'entertaining' just didn't cover it.

Now I know you're probably pretty confused, so I guess I'll start from the beginning.

ΩΩΩ

"Natsumi-chan! Come on!"

I let out a giant whoop as I cannonballed into Momoka's pool. And by pool, I mean miniature waterpark. Momoka had it built especially for today- a traditional rectangular section for swimming laps, but also a wavemaker, hot tub, waterslide, and lazy river complete with inner tubes. It may seem like an extravagance to you- it definitely did to me, at first- but Momoka's rich. Billionaire rich. Besides, we had a huge reason to celebrate. Unlike my old school- Kisshou Academy- the high school my friends and I now go to was formatted more like an American school.

And that meant summer vacation.

Momoka was still on her last year of Kisshou, so she- as well as my brother, Fuyuki- had yet to experience the glories of summer vacation. But Momoka decided to throw the party anyway. Between you and me, Momoka has a huge crush on my brother. I think she was trying to get close to him. Kind of backfired, seeing as Fuyuki hates the water.

Next to me, I heard another splash and looked over to see platoon leader and resident Keronian goofball grinning at me and making a ridiculous face. Trying to show off, he made a spin and ended up ramming his head into the pool wall.

Idiot.

Nobody noticed, though- see, all aliens have this ability called an anti-barrier, which they can control so only the people they want to can see them.

When Keroro popped up again, though, I noticed people staring at where he entered the water. Ripples were surrounding the spot. "Baka," I whispered through clenched teeth. "People are going to see you."

He grinned. "Don't worry, de arimasu! Kururu has been making something to help with this. He should be here soon."

"And you couldn't wait until he got here?"

Just then I heard Momoka calling, "Lunch is ready!" and we all darted over.

ΩΩΩ

As we dined on gourmet pizza (typical of Momoka- cheese from Italy, crust from Canada, and pepperoni from Argentina) I noticed a small boy, maybe a grade or two younger than Fuyuki and Momoka, eating voraciously across from me. He had somewhat of a bowl cut of black hair and wide grey eyes, and was kind of little-kid cute. I decided to try and make conversation with him. "I don't think I know you. Are you a friend of Momoka's?"

He set down his fork and stared. "Don't you recognize me, Nattchi?"

I gasped. "Tamama?!"

He grinned. So that's how Keroro planned to blend in when he talked about Kururu 'making something', I thought.

"Are the others…?" I trailed off, knowing there were half a dozen people who could hear our conversation.

"Yep!" he replied cheerfully.

I looked around to see a guy in an orange t-shirt, white shorts, glasses, and blonde hair pulled into a ponytail leaning against a wooden support for the covering we were under, a slight smile on his face. "You have got to be kidding me," I muttered, getting up and stalking over to the now-human Kururu.

When I got over there, I snarled, "What are you planning to do?"

"Enjoy ourselves, of course. Ku-kuku…"

"Enjoy yourselves? You're not even in a bathing suit!"

"Well, I'm more looking forward to the others making fools of themselves trying to behave like Pekoponjins," he replied smugly.

Of course.

"I'm going to find the others," I said crossly.

ΩΩΩ

First, I ran into Dororo- now a blue-haired, blue-eyed teenager talking happily to Koyuki. He was beaming- probably because he hadn't been forgotten for once- and, unlike Kururu, had on a bathing suit. I opened my mouth to talk to him, when the now human Keroro- shaggy green hair and green eyes- ran over, grabbed his arm, and dragged him away. I caught a brief glance of two pairs of swim trunks- green and blue- plunging into the pool with a splash, and I sighed. It would be even harder now to keep track of the platoon and keep them out of trouble.

"You frustrated too?"

I turned around to see a boy with extremely shaggy red hair, narrow red-brown eyes, and a scar across his left eye standing in front of me, arms crossed in annoyance.

"Oh, hi, Giroro," I said with another sigh.

He gave a small chuckle. "At least I got a better reception than Kururu."

I groaned and looked down to shake my head, accidentally catching a glimpse of his (fairly well-toned) chest. He was clearly a little more fit than the rest of the platoon, probably because he worked out m-" Auggghhh, I cut myself off mentally. What the heck are you thinking, Natsumi! Just because he looks like a human doesn't mean that he really is one!

"Natsumi?"

I looked up to see Giroro with a slightly worried look on his face. "S-sorry," I stuttered, hoping he hadn't caught me staring. "I think I'm going to go practice my flips." And with that I scurried over to the diving board, hoping that I wouldn't start fantasizing about my best friend.

Once there, I waited patiently until I got to the front of the line. By that time, a large crowd had gathered to watch- as usual. I climbed the ladder to the high dive, then took a deep breath and barreled forward. Pushing myself headfirst to gain the momentum for my first flip, I spun myself around once, then again before placing my hands in front of me and harpooning into the water in a perfect dive. I could vaguely hear the applause above as I began to resurface.

Suddenly, the cheering turned to yelling. Confused, I looked up to see a shadow rapidly approaching. I heard a splash, felt feet pressing into my head, and then everything went black.

End note: Reviews are greatly appreciated!