Disclaimer: I do not own Animorphs OR Sgt. Frog, or any characters or concepts included in ether series. I do, however, own all original concepts, characters, and ideas. This is probably the only time I'll state this, except if anything that challenges this statement happens.

Note: This is my third fanfiction, and my first crossover. I hope you'll help me improve my style as I write.

Warning: This fic includes mild shonen-ai and shojo-ai, though not involving the Animorphs characters. Sgt. Frog includes very mild homosexuality in the series, and I'm only trying to keep with Mine Yoshizaki's style. I'm sorry if this offends anyone, but I probably won't be changing this.

This was inspired by the Crazy Frog song, which aired a few days ago while I was reading Animorphs. I hope you'll enjoy this fic.

Chapter 1

My name is Fuyuki Hinata.

Oh! I wasn't supposed to tell you my last name! Why? Well, it all started a few days ago. Ever since then, my already strange life has taken a dangerous twist. Nothing is safe anymore.

It was summer break and I was stuck inside doing house chores, directed by a little, green, extraterrestrial frog named Sergeant Keroro.

Er, was I supposed to tell you that? I guess I'm not cut out for this whole 'secret agent' thing. But, since I don't see the harm in telling you the name of an alien no one knows exists, I'll continue.

"Nooo! If you clean it like that you'll scratch the glass!"

"Ack! Sergeant!"

The frog like being shook its head. Keroro looks a bit like a chibified frog that has learned to walk on its hind legs. He has huge staring eyes, a funny little flop-eared hat, and a yellow star on his 'chest'. A strange creature, I know, but already he seemed so normal to me. He'd been living in a spare room in our house for a few years.

"Here! Remember, don't use powdered detergent on glass, it'll leave scars! Breathe on the glass and rub in circular motions with a newspaper! The ink acts just like a polish!"

I sighed, smiling softly. "Thanks Sergeant, I-"

Suddenly he turned, staring down the hallway. "NO! Natsumi! Use regular flour on that stubborn grease!"

He ran off, surprisingly swift on his stubby little legs. A shriek rang out.

"Stupid frog! Don't sneak up on me like that!"

A resounding smack echoed across the house, followed with the Sergeant pleading with Natsumi for his life. Sometimes my sister can be rather cruel.

"Tsk tsk tsk, it is terrible to watch a proud soldier be reduced to doing house work for the enemy. Its almost slavery!"

I turned to find another frog, this one red with a white skull on his hat and a belt across his shoulder, shaking his head sadly. Corporal Giroro, one of Keroro's squadron, always disapproved of his commander, often bringing up the Sergeant's lifestyle. This was funny, because they were both freeloading at our house. Giroro even had a mop slung over his shoulder like a rifle.

Maybe I should explain. Keroro and friends are alien invaders, bent on the conquest of Earth, or Pokopen, as they call it. Same thing. Except, they've been failing miserably.

A few years ago, Natsumi and I woke up one mourning to find Keroro hiding in my bedroom. As a result of his discovery, he was abandoned by his people and has lived here ever since. Over time his comrades surfaced, having been discovered and taken in by other kids across Japan. Except Giroro, who sort of found us.

There's Tamama, a black frog who still has his tail. He's living with Nishizawa-chan, a wealthy girl from my class. He's cute and cheerful, though his sweet appearance hides a hair-trigger temper that surfaces whenever someone threatens his Sergeant or keeper.

The next frog is Kururu, a yellow amphibian scientist who lives with Mutsumi, a radio personality and artist. They're both mischievous, powered by Kururu's futuristic technology. Giroro and Kururu fight worse than cats and dogs, the tech genius usually ending up victorious.

The last is the mysterious Dororo. He used to be a member or the Keroro Platoon, but he left them to train in the art of the Shinobi and to save the world. He currently lives next door with Koyuki, a girl from the country.

As I continued my work, the tv that had been running in the background chimed, signaling a breaking-news report.

"Yesterday afternoon, five animals and a blue centar creature attacked a local school. Police are investigating a possible link to sightings of strange, froglike beings, or a mass-escape from Ueno Zoo. More updates as this strange sorry infolds. Now with the weather-"

I had no way of knowing it at the time, but it was that moment that would change my life forever. Again.