Hey there!
This is one of those 'What-if'-stories:
What if Jace grew up as a mundane and Clary as a nephilim?
This is my first story in English, so don't be too hard.

Disclaimer: I own nothing.

It was boring.
"Jeez, why does the queue always have to be so long?" Jace complained.
His best friend Simon who was standing next to him began fiddling with his glasses. "You were the one who insisted taking me here so I could 'get a girlfriend and loosen up a bit' as you said."
Jace rolled his eyes. "That doesn't mean that it has to take us that long to get in."
In front of the queue a blue-haired guy had started arguing with the security man. After a moment the security man shrugged and let him pass.
"Hey, look at him." Jace gestured in the direction of the blue haired. His eyes were too green, he was probably wearing contacts. "If you want to get a girl you have to copy some of him."
"You mean I should dress up like a vampire-hunter and dye my hair?"
"No. Walk like he does, borrow some of his cocky attitude. Trust me, girls like that."
"No thanks." Simon murmured and pushed his glasses back up his nose.
"And get rid of those glasses. You look as if you're on your way to the chess club."
Simon didn't answer. He didn't know why he was friends with Jace anyways. The two of them were like chalk and cheese. But out of some strange reason Jace had always liked to hang out with him. Maybe it was because Simon always seemed to disappear in Jace's shadow. Simon was fine with that; he didn't like to be the centre of attention anyways, but sometimes Jace was just so annoying... "You talk too much." He sighed.
But Jace didn't hear him. He was too busy winking at some girls that hid behind their long hair and broke out in giggling fits when Jace only looked at them. Simon thought that there were too many girls of that kind. Jace needed some kind of rejection in order to shrink his too big ego. Too bad that that never happened...
"Are you coming or not, geek?" Jace called from the entrance. Simon hadn't even noticed that they were at the top of the queue already.
Oh well, it couldn't get any worse than it was already, right?

Artificial mist clouded the whole club. The coloured light made the dance floor look somewhat unrealistic.
The boy with the blue hair stroked his long blade with one hand while a sneaky grin played around his lips. It was too easy. A bit of glamour onto the blade and it looked harmless. A bit of glamour into his eyes and the second the security man had seen him he was already inside the club. Of course none of this was necessary but it was part of the game. To fool those mundane, those naive mortals, to mock them right in front of their eyes and to see the surprised look on their faces.
But it wasn't as if mortals weren't good for anything, he thought. His green eyes searched the dance floor; he watched the mundane, boys and girls. Their bodies were full of life – waves of energy that filled him with a thrill of anticipation. He grinned again. They didn't know how lucky they were; they didn't know how it was to vegetate in a dead world. The light of their life glowed as bright as candlelight – and it was just as easy to snuff it out.
He gripped his blade and wanted to step out onto the dance floor when a girl left just this dance floor he wanted to enter and approached him. For a mundane she was amazingly beautiful – her long, red hair cascaded down her back in soft curls, fell between the black, feathery wings that she wore as a part of a costume, her eyes were shadowed heavily and she wore a black dress that barely reached her knees. He couldn't see any naked skin though, her boots reached up to cover her thighs. The dress had long arms and for a moment he wondered if she wasn't sweating in that outfit. She shot him a glance, grinned and gestured him to follow him.
With a sneaky grin she opened a door – the sign said that it was a storing place. Bingo, he thought. He didn't notice the siblings following him.

"What now?" Simon asked.
Jace didn't answer. They were dancing, well, Simon was at least trying. He was quite uncomfortable while Jace looked like a fish in the sea. A young guy was handing out Ecstasy on some herbal base and Simon politely rejected.
When he turned around to search for Jace he found him already making out with some girl with bright green hair. He sighed.
Suddenly he noticed that the blue haired guy from before had left the dance floor again. He looked a bit lost just like Simon himself and he remembered Jace saying that he should copy him. Well, it looks like we aren't this different after all, Simon thought.
"Found a cute girl already?" Jace asked. His face was all red and he was breathing heavily while he plucked a piece of paper with a phone number on it into pieces. He followed Simon's gaze and found the blue head.
His face fell. "You were looking at him?"
"You said I should copy him." Simon defended himself because he knew exactly that Jace was very quick with false conclusions.
Suddenly the boy tensed up. As Jace followed his gaze his breath hitched. The girl standing there was just too beautiful to be true.
The blonde smirked. "That's why you should copy him." Simon followed the gaze of the blue head but he couldn't see anybody. Well, he was getting uncomfortable with this topic anyways so he desperately tried to change it.
"The DJ's great tonight. What's his name?" Jace eyed him suspiciously. "You hate Trance."
He once again turned around to watch the red haired girl. The blue head walked after her as if he was hypnotised. He didn't notice the two black haired, a boy and a girl - both wearing all black - that were slowly getting off the dance floor.
Jace craned his neck to get a better look at them. Simon kept rambling on about random stuff but the blonde didn't listen to him. He had better things to do. He didn't know why but he had the odd feeling that the black haired guys were following the red girl. Maybe it was because they kept a steady pace into the direction of the girl.
The red haired girl with the black angle wings on her back had reached the wall and turned around to grin at the blue haired.
"Oh, by the way, I started to cross-dress lately... And I'm sleeping with your mother! I thought you should know." Simon tried once again.
The boy and the girl, blue and red, disappeared in the storing room. Jace thought about crashing their intimate moment for a second and wondered about the feeling of jealousy in his gut.
Suddenly he once again saw the black haired couple – they approached the door of the storage room.
What was this all about? They were talking. The girl suddenly shrugged and reached into her pocket to draw something from it – it was a long dagger that reflected the light of the stroboscope for a second before the two of them disappeared in the storage room as well.
Jace didn't hesitate for a second. The best way to win a girl was to appear as her knight in shining armour. And she needed that knight more than she knew now...
"Hey, where are you going?" Simon shouted after him. "That was meant to be a joke to get your attention!"
Jace didn't stop. He didn't have time for Simon's silly antics now. He needed to save a girl from some armed maniacs.

"What is your name?"
She turned around sending her long red hair flying over her shoulder as she turned her head and smiled at him. The only light in the small storage room were the street lights shining through the dirty windows. The door was littered with cable, little pieces of mirror that belonged to a disco ball and empty paint cans.
"Clarissa."
"Nice name." He approached her carefully in case that one of the cable on the floor had still electricity on it. She looked like a shadow, as if she could get a black silhouette on the wall any second if she wanted to. He really looked forward to bring her down.
"I haven't ever seen you here, Clarissa."
She giggled. "You're cute."
He approached her further and carefully took her hand while he reached for his blade. There was a small bracelet around her wrist but when he looked closer and realised that it was tattooed into her skin it was already too late.
She gripped his hand and flipped him onto his back. Something wrapped around his ankle and yanked his feet up into the air.
Now he understood. The long sleeved dress Clarissa wore wasn't part of the costume. She wore it to cover her skin – every square centimetre of it.
"Great move, Isabelle." Clarissa smirked. Two black haired people came out of the shadows.
"Your turn, Alec." Isabelle waved at Alec, who was obviously her brother, who grabbed the blue haired boy and held him to a pillar while Isabelle tied his hands back with some wire. Clarissa stood in front of him and grinned into his face.
"So, are you the only one or are there more of your kind?"
The blue haired felt that his wrists got bloody underneath the wire. "My kind?"
Clarissa rolled her eyes. "Another Play-Dumb-One."
She sighed and lifted the sleeve of her right arm to show her rune covered skin.
"You know exactly what I am." Their captive grinded his teeth.
"A shadow hunter." He hissed.
Clarissa grinned. "Bingo."

As Jace first opened the door of the storage room and entered it he furrowed his brow and looked around quite confused.
It was nobody there. But he could swear he had seen four people enter this room.
He had just turned around to leave, when he heard voices. Some girls laugh and a boy snap roughly at them.
It was as if they'd come out of nowhere.
t really look as if she needed his help now, another girl with black hair and a black haired boy. They had the blue haired tied against a pillar with some kind of wire.
What was going on? The red girl started walking up and down in front of the blue boy.
"So are there some more of your kind here?" she asked impatiently.
Of your kind? Was this some kind of gang rivalry?
"What are you talking about?"
"She meant other demons." The black haired boy answered for her.
"Do I need to explain what a demon is?" the red girl asked with mock innocence. The blue haired looked down.
"Please, Clary, we don't need some extra lessons in demonology." The black haired guy said. Jace could literally hear him rolling his eyes.
"Do I talk to much?" the girl – Clary – asked their captive.
"Yes." The dark haired boy and the girl answered in unison. They were obviously siblings.
"Oh come on, Izzy, Alec, that's not true!" Clary whined.
The blue haired looked as if he didn't know what to say. "I can give you information." He finally said. "I can tell you where Valentine is."
Jace still didn't dare to move. Valentine? Demons? Who were those guys?
"Jeez, each time we catch one of you scumbags you ramble on about Valentine." Clary sighed. "Valentine is dead. Izzy, finish him off; he won't give us any proper information anyways."
Finish him off? Jace tensed.
"No, please, let me give you advise!" the blue haired begged.
Clary just reached for her belt and drew a dagger. "Go to hell. Maybe the devil cares for where Valentine is." She lifted her hand, ready to strike, when Jace couldn't stand it any longer.
"Hey, easy, you weren't going to kill this dude?" Jeez, why didn't I think about what to say before I jumped out of the shadows, Jace thought.
All four of them were looking at him as if he was some sort of crazy alien.
"What is that?" Alec asked. His eyes were wide and he stared at Jace with more than just surprise. There was something how he checked out his body that Jace wasn't comfortable with.
"It's a boy, Alec." Clary seemed to have caught herself first. "You know what a boy is, right, Alec? You're one yourself." And the cocky attitude was back as well.
At least on top of the facade, she still checked him out with a shocked look in her eyes. All three of them were still staring at him with wide eyes.
"It's a mundane." Isabelle said tonelessly.
"But he can see us." Alec added.
"Why shouldn't I see you? I'm not blind." Jace frowned. "And stop staring at me." He added. "You make me feel uncomfortable."
Those guys were crazy! He should have called the police. For a second nobody said a word; Clary twirled her dagger between her hands. "Get out of here." She demanded.
"Why should I?" Jace asked and leaned against a pillar. "And by the way all three of you look at me I think you don't want me to leave either."
Alec and Isabelle both flushed and turned around to look at the blue haired again. Clary just rolled her eyes.
"We need to finish our business here and if you don't get lost we'll finish you off as well." Jace eyed the dagger suspiciously.
"I'd like to see you try." He grinned but the grin was wiped out of his face when Clary launched at him and brought him out of balance. He hit the floor hard while she held him down with her right knee on his chest and her left one on his right wrist while she held his left one turned above his head and her dagger on his throat. All of this had happened within only a few seconds and Jace looked at Clary with wide eyes while he tried to catch his breath which wasn't that easy with Clary on his chest.
He smirked. "I know I should be afraid but this somehow turns me on." He shouldn't have said that because Clary just narrowed her eyes and Jace could feel the blade of her dagger cut into his skin.
"Jeez, calm down! You're all crazy!" Jace tried to keep his nonchalance but he could feel sweat drip of his face. "Listen, I'm sorry, but I couldn't let you kill this dude."
"Why?" Clary asked through gritted teeth. She really had to be angry at him.
"Because you can't just walk around killing people?" Jace tried.
"Right. But this is no human. I'm not in the mood to explain it to you right now; I've got business to do."
She got off him and once again twirled her dagger.
"Okay, suit yourself. I called the police. I thought you should know." C
lary rolled her eyes. "I know you mundane good enough to know that you're lying." She turned around. "Do it, Izzy."
Isabelle nodded and took a knife from her belt, but in that very moment the blue haired boy got his arms free from the wire and launched himself at Clary.
Jace got to his feet and jumped in to help the red haired, but when he tried to tear the blue haired off the girl the boy whipped around and struck Jace with his left hand. Jace stumbled back clutching his arm. When he looked at his hand there was blood on it. Damn it. Did the boy have a knife? But when he looked closer it looked like the boy had grown claws that tore open Clary's skin. The girl screamed in pain and rage and kicked the boy in the gut.
He stumbled back and Jace wondered why he didn't crumble on the floor gasping and coughing.
Clary got to her feet, smearing her dagger with her own blood when she grabbed it harder and once again jumped to thrust it into the blue haired boy's chest. Jace's breath hitched when he saw the black liquid stream out of the wound. Clary stood next to the boy who was bleeding black blood now and clutched her shoulder. Her black dress was even darker where her blood stained it.
The blue haired turned around and looked at Clary with hatred in his eyes. "So be it. May the Forsaken get you all."
Clary didn't answer; she was still preoccupied with her shoulder. She didn't even look at the not-boy when his body began to shrink until it disappeared.
Jace carefully took a step backwards. He didn't need this girl; she was too much trouble for his taste. Normally he really liked troublemaker girls but they shouldn't be heavily armed death-angles.
"Where do you think you are going?" Of course she had noticed. She was probably a trained killer; she should notice everything in her surroundings. "You could have gotten yourself killed! Are you suicidal?" she asked through gritted teeth.
"He was about to kill you!" Jace defended himself.
"Of course he wanted to kill me. He's a demon; they are made to kill people. But you did not only nearly kill yourself but also distracted us so it could get his hands out of the wire! You nearly got us all killed!"
"Well how should I know?! Not everybody is a crazy freak-fighter that gets born to kill demons that look like human and disappear after you've killed them! As you said before, I'm a stupid mundane!" Jace shouted at Clary.
The red haired furrowed her brows. "What did you call us?"
"It doesn't matter! I'm out." He once again turned around and wanted to leave the storage room but suddenly something wrapped around his wrist tightly. Jace hissed in pain.
"What shall we do with him? He can see us. He already knows too much." He heard Isabelle say.
"Let him go. Nobody is going to believe him anyways." Clary wiped her dagger with a piece of cloth and stuck it back into her belt. Isabelle loosened her whip and Jace rubbed his burning wrist.
"Shouldn't we take him with us?" Alec asked sceptical.
"Alec, he's a mundane. We can't take him to the institute, even if I think that Hodge would love to talk to her." Isabelle answered. Clary narrowed her eyes and carefully approached Jace. The blonde boy gulped. The way she walked in his direction resembled a predator approaching his prey.
He didn't look at her beauty anymore; Clary looked like danger in person.
"Don't be crazy, you can't kill me. My body wouldn't disappear after..."
"Hey, what are you doing in here?" Jace turned around quickly and saw a security man enter the storage room.
"I... um..."
"And who are you talking to?" the man interrupted.
Jace turned around. Clary stood right behind him and grinned. She waved at the security man but he didn't seem to see her.
"I... I thought I saw somebody going in here." He knew it was a lame excuse but he didn't have the nerve to explain that there were some invisible guys that only he could see. He would probably land in an asylum.
"What happened to your arm?"
"My arm?"
"It's all bloody." Jace looked at his arm. "Oh, um, somebody bumped into me with some broken bottle. Don't worry, it's nothing."
He heard Clary chuckle. He needed to get out of here, he started to see things.

"So, why did we have to go?" Simon asked for the third time now.
Jace rolled his eyes. He gestured at his bandaged arm and murmured something about armed lunatics that kill demons and think that they are some kind of ninjas.
He finally managed to get the attention of a cabby, got into the cab and told the cabby his address.
Simon climbed in as well and closed the door.
"You look like you've seen a ghost."
Jace just stared at his feet. "Maybe I have."

Sooo... I took some passages of the original book but I only had the German book so I had to translate it back into English. Sorry if it's crappy. Please tell me what you think of it and if there are any mistakes in it; the grammar-check on my Microsoft Office is a bit crappy.

R&R