A new story to start my new year as a fanfic writer! I noticed there was only two stories of this crossover so I decided to do something about it. It was also a request from…I forgot who asked for this…sorry if you're reading this! I have a bad memory! Anyway, enjoy!

Disclaimer: I do not own Danny Phantom or Zero no Tsukaima. If I did, I will be very, very happy.

Prologue: A Whole New World

A sixteen-year old boy was sitting on the edge of a window, staring at the night sky with a bored look on his face. He had long, messy black hair tied to a pony tail, a red hoodie that was zip open, revealing a white shirt. He was wearing a pair of jeans and a pair of red sneakers.

The boy's name is Danny Fenton, who was formerly known as Danny Phantom.

Two years ago, there was an accident in his parents' labs, turning him into a halfa; a half-human and half-ghost hybrid. Along with his two friends and big sister, he protected his home, Amity Park, from ghost attacks.

Last year, he had a fall down with his two friends. It began when he was getting tired of being a hero for Amity Park. They were afraid of him for being a ghost. And he was also tired of fighting ghosts, only to receive nothing but screams of terror and anger.

When he told them that he was done, they tried to persuade him to rethink his decision. When he wouldn't change his mind, they started calling him selfish.

That made him angry at them. He exclaimed to them that he given everything only to receive less in return and that he didn't ask for being a halfa.

He hadn't talked them since then and he didn't plan to anytime soon.

With so much free time and no responsibilities, he started catching up to his school work and was now considered a genius which Jazz approved. And thanks to his ghost powers, he became fit than anyone in his class. He was big and buff like his dad. He had more like a swimmer's physique. He also became an inventor like his parents, which they were proud of.

He also develop an interest in Japanese. He bought books about their language, culture, history and even their cuisine.

With all the good came the bad, with Sam and Tucker no longer talking to him, he became a loner. He didn't talk much to the 'popular kids' since he was a little resentful to all the bullying they did to him.

There were a little ghost troubles now and then but they were nothing big. Since his retirement, there were nothing life threatening trouble, thanks to his allies in the Ghost Zone, who were keeping the peace thanks to some favors they owed him. The only downside was Vlad, who was now annoying him about joining his side to rule the world and he can't blast him with a Ghost Ray.

Now, he was looking at the sky because he didn't know what to do. Sure he was doing well with school and had so much free time, but if felt like he lost his way since he retired. He didn't want to go back fighting ghosts, but he wanted to use his powers for anything.

With nothing better to do, he went ghost and went through the air. His ghost half changed as well; his hazmat suit was replaced with a simple black jeans, a long sleeved black shirt, a white vest with his DP symbol on the right side, white gloves and black boots.

He flew across the sky gracefully, enjoying the cold, soothing air. Minutes later, he was about to go home and study for that science test tomorrow when he suddenly heard something. Holding his breath, he heard some words spoken by a feminine voice.

"My servant that exists somewhere in the vast universe," the voice said, so soft that it sounded like the wind. "My divine, beautiful and wise servant, heed my call, I wish from the very bottom of my heart and add to my guidance and appear!"

Without warning, a portal appeared in front of Danny, surprising him. He stared at the portal since it wasn't green like he was used to seeing, but blue.

If Danny was smart, which he was, he would have leave this weird portal and let it pass, but something tells him to touch the portal, which wasn't really a smart choice. He slowly raised his hand and touched the portal. Without warning, he was sucked in it.

He traveled through a dark path with no light, feeling like he was tied to the front of a train going at top speed. He screamed as he try to see through the darkness. He then saw a white light in front of him that grew big.

He was blinded by the light and blinked a lot until he could see again. He saw the ground approaching rapidly and before he knew that he was falling, he hit the hard ground, creating a plume of grass.

He turned back to Fenton as he slowly sat up, coughing as the dust cloud slowly disappeared. Shaking the cobwebs off his heads, he looked around and knew that he wasn't home. His first clue was that it was daytime. The second clue was the giant castle behind him. The third last clue was the cluster of people dressed in uniforms and cloaks in front of him staring at him with shock and disbelief. And the last clue were the weird animals with them. There were some dogs, cats and birds…and a blue dragon, a big lizard spitting fire…

"Um…I come in peace?" Danny said as he slowly stood up, keeping his eyes on the big group in case they might do something.

The one in front of him was a cute girl with long pink hair and bright pink eyes. Like the rest of the female group, she was wearing a white, button shirt, a dark blue, short skirt and a dark blue cloak that was being held a symbol with a star on it. On her hand was a well-polished stick.

Behind her was an old man with a bald spot wearing glasses. He was wearing a purple robe with gold linen and holding a staff and a book.

One of the people in the crowd, a boy, said something Danny didn't understand. Now he was sure he wasn't back home.

Everyone started laughing, except the girl and the bald man behind her. The girl asked something to the bald guy, who didn't look happy at what she said. With a few words in a stern voice from the man, the girl pouted before looking at Danny with a blush and an angry pout.

She said something to Danny which he didn't understand and grabbed him by the face. Without warning, she kissed him, surprising Danny that his brain almost shut down. When it ended, Danny felt something burning on his right hand.

Shocked, he looked at his hand and saw some weird writing glowing on his hand, burning into his flesh. It was the second most painful thing he felt in his life. He somehow managed to not lose consciousness and he glared at the girl.

"What the hell was that?" he asked with a glare. The girl just glared at him and lifted the stick in front of him, which confused him.

She muttered something and the next thing Danny knew was an explosion to the face. Regaining his bearings, he stood up and got ready to fight.

"Okay, one more of that and I'll really lose it," he said, surprising the girl.

"You can talk our language now?" the girl asked, surprising her and everyone. "…It was supposed to knock you out…"

"Guess The Zero failed again," a chubby boy with blonde hair said, getting all the other kids to laugh. The girl looked down with a glare, confusing Danny.

He didn't noticed the guy looking at his hand were the writing was.

He felt something tug on his pants. Looking down, he saw a dog looking at him while wagging his tail. Slowly, he petted the dog on the head, causing everyone to stop laughing at look at him. He suddenly turned around when he heard a lot of steps going towards him. He turned around and was dogpiled by the other animals, including the dragon, which wouldn't make it a dogpile.

"The familiars seems to like this commoner," a girl with blonde curly hair commented, looking at the very funny scene of Danny struggling to get out.

"Help me!" Danny cried as he tried to get the animals off him, only to fail due to their superior numbers. He could have used his ghost powers, but didn't want to because of these very suspicious people in front of him. "Hey! I know you can hear me!"

He suddenly felt himself getting picked up by the back of his shirt, freeing him from the animals. He looked behind him and saw the blue dragon staring at him playful yet intelligent eyes.

"Uh…thanks," Danny commented with a small grin.

"You're welcome!" a girly voice said, surprising Danny. He looked around and stared at the dragon with wide eyes.

"Did you just talk?" he asked, looking at the dragon, who nodded its head. A girl with short, light-blue hair and glasses holding a book and staff stared at Danny with slightly wide eyes.

"I am going crazy," he muttered as the dragon pushed the other animals away before putting him down. "Thanks."

The girl then marched towards him and crossed her arms and stared at him.

"Who are you?" she ordered to Danny, her posture screaming authority.

"Uh…Danny Fenton," Danny replied. "And who are you?"

"I am Louise Francoise le Blanc de la Valliere," the girl replied with a formal tone.

"That is one long name," Danny commented, causing the girl to glare at him.

"Whatever!" she exclaimed, causing Danny to raise his hands in a peaceful manner. "As of right now, you are my servant!"

"…Excuse me?" Danny asked like he didn't hear her correctly.

"Are you deaf? I said you are my servant, my familiar!" the girl said.

Danny stared at her long before he grabbed his cheek and pinched it painfully. Everyone stared at him with a sweat drop as he let go, showing his redden cheeks.

"Damn it, this isn't a dream," he muttered before looking up. "If this is your version of a joke, it's not funny, Clockwork!"

They all stared at him like he was crazy before Louise walked forward and grabbed him by the arm, dragging him away.

This is gonna be trouble, Danny thought as he let himself get dragged away by the girl and away from the large group who were now looking at him with either weird or surprised looks.

There you go! Hope you like it! Familiar of Zero was one of my favorite anime and I finally get to write it, so I am really happy here. Well, time for me to go to sleep. Like I said in my profile, I will update this chapter two more times before focusing on the next story. Well, see you later!