Summary: He had know he was twisted. He didn't realize just how much. mature content. Jonathan/Clary AU Where Jocelyn ran away with Jonathan and Clary, they still have Angel blood and demon blood.

CHAPTER 1

Clary was already downstairs when he got up. She was in the kitchen cooking a breakfast of pancakes and bacon. Clearly panicking, she zipped around the kitchen. "Holycrapholycrapholycrap! Three hours to get lunch ready! Then dinner, then the fireworks and everything else! How?!"

Jonathan chuckled at how cute his sister looked flustered. It had been left up to her to plan the fourth of July celebration and to make the homemade ice cream. He also noticed how she rarely, if ever cursed.

"Why are you just sitting there? Help me!"

Shovelling food down, he smirked at her "I'm going to enjoy my breakfast, little sister"

Screaming in frustration, she sped off to find folding chairs. He thought of how he could make her scream for other reasons. Glancing down, he saw his 'freind' had made itself know. Groaning in frustration, he went upstairs to take care of it.

He sat on his bed and thought of his little sister withering under him, begging to be fucked. Taking himself in his hand, he started at a furious pace. To worked up to notice the door open. Grunting Clarissa' s name he felt himself nearing. Knowing his mother was buying fireworks and Clary was outside he let himself shout her name at the top of him lungs.

***CLARY***

She woke up at almost 6:00 in the morning and immediately started setting up stuff out side for the lunch, breakfast, and fireworks display. (AN in this they live in a suburban area some where else. you pick.)

At about 9:00 Jonathan finally came down stairs, looking amazing with his morning hair. She mentally slapped herself for thinking that. He was her brother! It was twisted! She had to push down her feelings and love him like a sister. She went back to panicking and makeing lunch. "Holycrapholycrapholycrap! Three hours to get lunch ready! Then dinner, then the fireworks, then everything else! How?!"

Jonathan chuckled sexily and started eating his breakfast. Her head snapped towards him. "Why are you just sitting there? Help Me!"

Giving her a smirk that made her knees weak, he stated matter-of-factly "I'm going to finish my breakfast, little sister"

Even though she secretly loved when he called her that, she was now pissed at him for not helping her, and screaming in frustration, she ran outside to find folding chairs.

When she got outside, she got a message from Simon saying that his band would be able to play at the celebration. She sighed in relief. Jon would be happy that the other members of his band would be able to make it. Running back inside to tell him, she heard a grunting noise, followed by what sounded like Jon saying her name. Worried something might have happened, she ran upstairs to his room.

The sound of her name was getting louder, and she opened the door enough to see her brother on the bed furiously stroking himself. She froze. She had never seen a shirtless man before, let alone a naked one. Not to mention the pride between his legs was HUGE. Almost a foot long and a least 2in. thick. We're all men that big? She suddenly felt warm between her legs and a growing wetness there.

Jonathan's grunts were getting louder and faster and suddenly a white liquid sprayed from the head of his cock. Throwing his head back, he shouted he name at the top of his lungs.

Clary's mouth was in a little 'o' from the performance she had just witnessed. She wasn't even sure WHAT she had seen.

Jonathan's breathing was calming, and he looked up locking black eyes with emerald ones. After a moment of shock he grinned at her and said "Enjoy the show little sister?"

She blushed a bright as her hair and struggled to find an answer,

"J-J-Jonathan... I was just-uh... I-I-I didn't m-m-mean t-t-to um..."

"Clarissa. Come here.", He said simply. She hesitantly stepped in to the room.

"Jonathan? What were you just doing?", She asked innocently.

***JONATHAN***

His little sister was so innocent and pure. He couldn't wait to corrupt her. She was his sister. She was his. As he realized this, he thought of another man trying to take her. Growling dangerously, he saw her shrink back in fear. His heart broke a little bit as he saw it.

Standing up he wrapped his arms around her. She stiffened for an instant before relaxing into his embrace. Inhaling deeply, he suddenly smelt the sweet scent of her arousal in her jeans. It was all he could do to not throw her down and take her right one hand on her waist and the other under her chin, he leaned in and nipped at his sister's ear. He felt her gasp and shudder in his arms.

"Do you know who you belong to, Clarissa?"

She shook her head "Don't I belong to myself?", she looked up at him with wide, innocent green eyes.

He shook his head "No, Clarissa. You belong to me. Understand?" He spoke quietly, as if talking to a skittish animal. Now she looked even more confused. "But your my brother. Isn't that wrong?"

"Tell me Clarissa. Does this feel wrong?", and with that, he pressed his lips to hers.

To his delight, almost immediately, she wrapped her arms around his neck. He licked her bottom lip and felt her gasp in surprise. Taking advantage of this, he pushed his tongue into her mouth to battle with hers. She moaned into his mouth. He slid a large hand down her body until it was stroking her through her jeans. Turning to jelly in his hands, she pulled away from his mouth to throw her head back in a moan. He set to work on her neck makeing sure to leave his mark. He bit her neck almost breaking skin. Clarissa moaned louder in his ear.

As he was about to slid his hand into her pants, the front door opened with a bang.

"CLARY! JONATHAN! I'M BACK!" their mother shouted

Reluctantly pulling back he took in her flushed face and his mark on her neck. Smirking with male pride, he leaned down and murmured in her ear "Tonight"