Okay, this story idea was inspire by the game Helltaker. I did look up the game and I have to admit, the demon girls are indeed what they were made to be, cute. Now, this idea is different. One, this isn't a harem. Two, I'm only using one Demon girl and she based on the demon girls from the game, as for which one, I'll try to work them all into one character. Three, if you want this to be marked as a Danny Phantom/Helltaker crossover inside of a single story, I will do that. Four, my Demon girl is going to be named Lucy. Five, if any of you are religious, then I apologize if the story offends you in any way and would advise you to not read this. And Six, I don't know if I'm going to have lemons in this story. This is going to be Rated M, mostly for swearing, and some blood, no gore through! Let me explain my character a little before I start.

Lucy Devilman is one of the many daughters of Lucifer, yes that one! However, she wants nothing to do with her father or Hell and move up to live on Earth. She finds herself in Amity Park and soon meets Danny. I'll save the rest for the chapter.

She walks down the street with her hands in her pockets and crewing some bubblegum. She had found herself in a place called Amity Park after getting away from her father and her siblings. She was on her way to a school that she enrolls herself into without any questions ask. She looks around the town and recalls hearing tales about ghosts attacking the place and one that does what he can to protect it. She groans and rubs her head.

'Well, shit. Looks like I might have to keep a low profile.' She thought.

She enters the school and soon found her first class. She was a bit surprised to see that her teacher was overweight but kept it to herself. She looks out at the class and notices that all the boys were staring at her and knew why. Despite being a teen, her body was way different than most. Her white hair and red eyes were strange-looking, but the boys were mostly looking at her figure. He heard from other guys that she look like a supermodel with her body. She mostly ignores them. As she looks, she spotted one boy that appears to flinch and looks away from her.

'Oh? A shy one?' She thought.

"Alright class, we have a new student join us today. Care to tell us about yourself, Ms..." The Teacher asked.

"Lucy. Just call me Lucy." She said before looking at the boy again.

She notices he had black hair and blue eyes, the opposite of her. She also notices he didn't look as big or muscley as some of the others guys. In fact, the way he was trying to hide himself from her made her think he was kind of cute.

"And I think it best if you were signed a Tour Guide." The teacher said.

Lucy thought about that and smiles.

"Is it alright if I chose my tour guide?" She asked.

"Why, yes." The teacher said, and almost every boy, except the one she was looking at, raise their hands.

Lucy was a bit surprised to see him not raise his hand. In fact, it looks as if he knew she wouldn't pick him.

"How about, him?" She said, pointing at the boy.

The boy pointed to himself as if to say, "Me?" and everyone was very shocked at her choice. Even the teacher was surprised.

"Mr. Fenton?" He asked.

Lucy nodded, and just about every boy protest against it. The Teacher stops it.

"Enough! Mr. Fenton, you will be excused from classes to show Ms. Lucy around. Now, why don't you take your seat." He said, and Lucy headed for him.

When she reaches him, she notices that he was looking away from her and smiles.

"Hi." She said, making him turn to her.

"Um, hi." He said, nervous.

Lucy sat behind him and smiles.

'Yeah, sounds like I might have some fun after all.' She smirks.

Danny couldn't believe that he was playing tour guide to a new girl. She was very beautiful, and those white hair and red eyes just scream beauty. However, he didn't think that he'll have a chance because she was way out of his league. He was shocked to hear that she pick him to be her tour guide. He spotted her leaning on a wall with her hand in her pocket and chewing on some gum. Danny notices that she wore mostly red and black. She had a red t-shirt with a black jacket over it. She also had black pants and red and black shoes. She looks to be wearing a black headband in her hair. She blew a bubble that pops and looks over at him.

"So, you're my tour guide?" She said, getting close to him.

"Yeah," Danny said, nervously.

He watches her walk around him as if she was checking him for anything. When she appears back in front of Danny, she leans close to him causing him to blush. She was so close that their noses touch. Lucy smiles and backs away.

"You'll do." She said.

Danny blinks before starting the tour. Lucy follows him and notices how he was trying his best not to stare at her when explaining about some of the classes. She just nods as Danny told her the things, but her mind was on something else.

'Hmm, he most different than most boys. Maybe I should try to work a little devil magic.' She thought.

"Excuse me." She said, making Danny turn to her.

"Yeah?" Danny asked.

"Can you come with me for a second? I have something I want to ask you." She said.

Danny blinks and nods. Lucy leads Danny to an empty classroom and closes the door. Danny looks confused before Lucy sat on the desk with her legs cross.

"So, um?" Danny said, trying to stop his blush.

"Please, sit," Lucy said, patting the spot next to her.

Danny looks unsure but sat on the desk as well. Lucy smiles and leans close, making sure he could see down her shirt. Danny notices and blushes heavily. Lucy smiles and gave a cute look.

"I always wonder, why do you look away from me back in our first class?" She asked.

"I, um, I..." Danny tries to say as Lucy got even closer.

"Are you shy around cute girls?" She asked, her smile not fading.

"Yes, I mean no. I mean..." Danny said, not sure why he was having a hard time talking.

"Well, I, for one, think you're cute." She said and saw his face turn red.

"Really?" He said.

"Yes, how about I give you a little treat," Lucy said.

Before Danny could ask what that was, Lucy kisses him on the lips. Danny was shocked and couldn't move. Lucy knew why and didn't stop. Danny just sat there before he started to reach up and grab her shoulders. He carefully pushes her back, breaking the kiss.

"I'm sorry." He said, waited for her to yell at him.

"Oh, don't worry about it. You taste amazing." She said, licking her lips.

"It just, aren't we move too fast? I mean we just met." Danny asked.

"Maybe, but I do like you. How about this, give me all the kisses I want, and I won't pull something like this again?" Lucy said.

Danny looks away, unsure. This girl was beautiful, and she did like him, but it felt they were moving too fast. He looks back and notices her fanning herself with her jacket, while sighing and gave him a cute look. Danny blushes and turns away. Lucy could tell he was fighting with each inch of his body not to jump on her. Normally, most guys would lose control of themselves at this point, but this boy was way stronger. She stops and smiles.

"You are so cute. Most guys jump at their first chance, but you? You are trying not to lose control of yourself. Even if you did, I won't hate you for it. Tell you what, don't worry about the kisses. Just let me hang out with you, and we'll go from there." She said.

"Okay?" Danny said, blushing.

"By the way, my name is Lucy Devilman." She said.

"Danny, Danny Fenton," Danny said back.

Lucy smiles and hops off the desk.

"When there, let's finish that tour. We got a date to head to." She said.

"Yea...wait! What?" Danny nearly shouted.

Lucy laughs as Danny blushes again.

"I'm kidding." She said.

The two continue the tour, and soon it was lunchtime. Danny leans Lucy to the cafeteria and helps her get her food. They both sat down at a table, but Lucy sat next to Danny. Lucy felt drawn to him. She wasn't sure why, but she did know that he was different than most boys.

"So, what your plan?" Danny asked her.

"Huh?" She asked.

"After school? What do you want to be when you're done with school?" Danny asked her again.

Lucy thought about it and did think of her main dream that her siblings laugh at.

"Well, I want to open my own restaurant. Not to brag, but I can cook some mean food. Better than what this is." She said and pointed at what appear to be mystery meat.

"Really? Think I can try it?" Danny asked.

Lucy smiles and nods. They both sat there and ate their food. She notices Danny looking a bit down, and that confuses her.

"Is something wrong?" She asked.

"Sorry, it just that, my friends. They use to sit here with me. Their parents transfer them to other schools. I haven't been able to make any more since they left." Danny said.

Lucy saw how sad he was and sighs.

"Well, you got one." She said.

"Huh?" Danny asked, confuse.

"Me. I'm your friend," Lucy said.

"Yeah, thanks," Danny said and smiles.

Lucy smiles back and kisses his cheek, making him blush. Lucy really did like him. He was like the complete opposite of her, and she like that.

School ended, and Lucy invited him to her place. Danny was surprised to hear that and accepted. Lucy leads him to the Amity Park Apartments and took him to her place. They headed inside, and Danny looks around. The place looks normal enough, some furniture, a TV, a kitchen and some other things he knew of. He turns and notices Lucy take off her jacket and hang it up. She then walks over and opens her refrigerator and pulls out two sodas, and toss one to Danny. He caught it and saw Lucy sit down on her couch. Danny looks unsure before sitting down as well. He opens it and took a sip. Lucy looks at him and smiles. She moves closer to him and leads herself on him.

"Um, Lucy?" He asked.

"It's okay. I know that you like me." She said, smirking.

"Um, well, I, um..." Danny said, blushing.

"It's okay. Honestly, it nice to have someone over." She said and took a sip.

"What about your parents?" Danny asked.

"My mom left us long ago. My Dad doesn't care about me, and my siblings are jerks." She said.

Danny blinks, she must had a rough childhood.

"Sorry, wasn't my place to asked," Danny said.

"No, it's fine," Lucy said, taking another sip.

Danny was quiet and took a sip himself. The quiet started to feel awkward, and Danny thought about what else to say.

"So, Lucy?" He said, making the girl turn to him.

"If it not too much to ask, why did you choose me to be your tour guide?" He asked.

"Truthfully? Because I saw something about you that stood out from others. The way you turn from me when I saw you. The way you acted when I pick you. You are far different than anyone I met. There's something about you that I like, and I wanted to know more." She said.

Danny was surprised. She picks him because he was different? Danny blushes a little at that before Lucy lay her head on his shoulder.

"Um, Lucy?" He asked.

"It's okay. I always want to know how this feels." She said and took another sip of her soda.

Danny blinks and took a sip as well. The two sat there, enjoying each other warmth, drinking their soda. Lucy then looks up at Danny and then kisses him. Danny was surprised and notices something different. The kiss felt great, really great. He started to kiss back, and they went more into it. Lucy pushes him on the couch and they just made out for the next half hour. They broke, and Danny took a breath.

"Wow, I...that..." Danny said breathlessly.

"I know. You're not bad." Lucy said, smiling.

"Lucy...I really like you. Do, do you want to go out with me?" Danny asked.

Lucy smiles and kisses him again.

"Yes." She said, and they made out again.

It was an hour later that Danny had to head home. Lucy waves goodbye as the door closes. She sighs, and unwarps her tail from her waist, and took off her headband, allowing her horns to be shown. She turns and sat down on her couch. She admits that she was moving too fast, but he was just so cute. She sighs and notices Danny's empty soda can. She smiles as she threw the can away. She sighs and fist bumps.

"Ha! Take that Dad! I got a boyfriend, and I'm going to date him!" She cheers.

She sat down and smiles.

"And it only a matter of time before we get to the main phase. But I need to take it to slow the rest of the way. Not to mention, I have to tell him about me being a Demon." She said before shaking her head.

"I'll worry about it later." She said.

She looks at her clock and saw it was close to 7.

"Better make something. Can't wait for the day for him to try my food!" Lucy said and walks towards her kitchen.

And end. Well, they just met, and already they're starting dating. Normally, I work the way up there, but I wanted to try something new. Now, Lucy is not dating Danny because of some bet with her father. She really does like him, and she going to take it slow after this. If you are wondering about Sam and Tucker, they'll be the story but later. And yes, Danny does have his Ghost Powers. I'm not sure on the next chapter just yet, but I'll come up with something. I'll come back to this in a few days, I got another story I wanted to finish first.