Leviathan walked through the town, ignoring the many humans that were staring at her. She was completely lost on what just happened. Two demons she never saw before stop her fight with Luifcer after seeing the arch-angels appear and Lucifer praises her for her strength. She never praises her for anything. What happens to the queen of hell during her stay?

"Hey."

She stops and looks up to see Danny in front of her.

"Are you okay?" He asked, making her blink.

"Why do you want to know that, mortal?" Leviathan asked.

"You seem lost and confused. Even if you're not human, it does look like you need some help." Danny said.

"Do humans always walk up to strangers?" She asked.

"No, but..." Danny started before recalling she didn't know.

"Right, right! Sorry. This is the time you meet me like this." He said, facepalming.

"My name is Danny Fenton. I'm...err...dating Lucifer." He said, shocking her.

"YOU'RE DATING THE QUEEN OF HELL?!" Leviathan shouted.

She was shocked when Danny covered her mouth, looking very worried. He looked around, seeing that no one noticed her shout.

"No one knows about that. It's better to call her Lucy until we're alone." He told her.

He then removed his hand from her mouth before sighing.

"And the reason I know her is because she's living with my family." He told her.

"Your parents let the devil herself stay with them?" Leviathan asked, confused.

"She's clearly different from what we heard, but so far, she's fitting in," Danny said.

"You are one strange mortal," Leviathan said.

"I know," Danny said before checking his watch.

"Whoops! Almost forgot that I need to go get Lilith from her school." He said, confusing her more.

"Who's Litih?" She asked.

"Oh, just a girl that we adopted. Me and Lucy are pretty much her parents." Danny said, shocking her more.

"The queen adopted a human child?!" Leviathan asked.

"Human! What has this world due to the queen!?" She asked, grabbing him.

"I can't say. But I do know that there is more to a person than what they hear. Is she dangerous? I do not doubt that. But since getting to know her, Lucy is more than the queen of hell. I don't think she had fully removed her angel side." Danny said, pulling her hands off him.

"Now, I get to get going." He said, walking off.

Leviathan just watched him, wondering if this mortal was messed up in the head. After thinking, she decided to follow him. Hopefully to get some answers.

Later,

After picking up Lilith, both Danny and his adopted daughter walked back to Fenton Works.

"Daddy, I heard that a fight happened at your school. Was anyone hurt?" She asked.

"No. It turns out that we had another guest from hell and it wasn't a demon looking for your mother's powers or coming to cause trouble." Danny said, surprising the young girl.

"It was one of the sins. Or, as your mother called her, one of the Seven Princesses of Hell." Danny told her.

"Which one?" She asked.

"Leviathan, the Sin of Envy," Danny said, surprising her.

"Was that what Auntie Jazz had before she got her powers?" Lilith asked.

"Pretty much. But Leviathan was able to match your mother despite her only having two pieces of her powers." Danny said.

"And mommy won?" Lilith asked.

"Actually, Jazz and I had to stop them. Your Aunts from Heaven came down and Jazz and I had a feeling something bad would happen if they kept fighting. So we turned into our demons forms and stopped them from fighting." Danny said, surprising the young girl.

"You so cool, Daddy!" She said, hugging him.

Danny blinks in surprise before patting her head.

"Thanks, Lilith." He said.

Leviathan watched from afar, surprised by everything she heard. This mortal has a demon form?! And Lucfier only had a small part of her power when fighting her?!

"I told you she lies."

Leviathan turned around and saw the Black Mistress again. She glares before turning away.

"I told you to leave me be, demon." She said, growling.

"Danny is the boy that she lied to. He carries a piece of her power. Help me get it and you'll..."

"ENOUGH!" Leviathan roars.

She turned and aimed her trident at her.

"I NEVER wanted her power! I wanted to beat her with my own! Take everything she has because I envy her! I am one of the Seven Deadly Sins! I will not join you! Come near me again and I'll show you why you never should mess with a creature from the deep!" She warned her.

The Black Mistress looks at her, her eyes glowing with power, but it does little to Leviathan. She finally turns away, angry that she couldn't get Leviathan to work with her.

"If you're not with me, then you will die, just like Lucifer." She said, disappearing.

Leviathan sighs. That demon had no idea what she was messing with. She turned away before deciding on something else. She summons some water and flows away.

Fenton Works,

After Lucifer tells the Fentons about Leviathan and how they should expect the others, Danny decides to take a nap after a long day. He enters his room and lays down on his bed. He fell asleep, not noticing water dripping through his window. A puddle forms as Leviathan appears out of it. She notices Danny sleeping and walks over to him.

She then placed her hand on his chest before closing her eyes. She could see everything about him. His love for his family. His dreams of going into space. And, his love for Lucifer himself. Leviathan was surprised. He was in love with Lucifer. Knowing that she was envious of everything that Lucifer had, she felt that she should have that love as well. But, was it right? She never knew the queen to love anyone but herself.

She looks at Danny before trying something she never down before. She leaned over to him, making sure her hair was out of the way and kissed his lips. Leviathan was in complete shock. She had never kissed a mortal before and, for a second, she was reminded of her mate who was killed many centuries ago.

She pulled away, feeling a lost feeling return to her that she hadn't felt in centuries. She smiles, looking at the mortal in a new light.

"Danny Fenton..." She said, recalling his name.

"It's not right for Lucifer to have all of your love to herself. I envy that. So, I'll make you mine one day." She said, kissing him again.

With that, she turned and goes to leave. She wanted to take more, but she thought it would be more fun when he was awake. But maybe she could do something before she goes. She unbuttons her suit, letting her green bra boucle free. She wasn't Asmosdues but it felt like she hadn't done something like this in forever. She walked back over to Danny and smiled. She leads to his ear and whispers.

"I love you, Danny. Please, take this gift..."

She then grabbed his hand and placed it on her breast. Danny, still dreaming, gave it a small squeeze, making Leviathan moan. She just let him continue, enjoying the feeling she was getting.

'He's just like my mate! Oh, how I wish I could take more of you!' She thought.

She decides to stop before she loses control of herself. She pulled her hand away before giving another kiss to Danny. She stood and buttoned her suit up. She smiles before finally deciding to leave. All the while Danny slept through it all, having no idea that his adventures with the Sins had not come to an end.

Stopping here. It wasn't that I ran out of ideas, I kind of just stopped after Leavithan decided that she was going to take Danny away from Lucifer. But as I mentioned in the Seven Princesses of Hell chapters, she's not trying to take him because she's envious of Lucifer's love for him, but more like she's falling in love with him as well. I also can't remember where I heard this, but I hear that there were once two Leivathans and God ended up killing one to prevent more dangerous creatures from being born. Again, I don't remember where I heard it, but it's something I decided to put in.

Okay, I think it's for two ideas to happen at once. First, Sam, as Black Mistress, will trick Tucker into using the piece she has and at the same time, Asmodeus will appear as well.

Hell, because of this, I'm thinking about making another story called, Sintaker, where Danny ends up winning over the Seven Deadly Sins that's going to appear in this story. Not yet, though. I don't really have anything planned out. It just came to my mind.