HELLO FF! It's been almost a year (?) since I was last on. Sorry for not really updating other stories because I've been busy with quite a few projects like my new book :D so without further ado, my new fanfic which is an OC/OC story. There's also Malec, Clace, Sizzy :)

Disclaimer: I don't own The Mortal Instruments.

Chapter 1

When the war had been fought and Clary had come back from the demon realm with her friends and family, most of the things had returned to normal. She and Jace subsequently got married about four years down the road, Alec and Magnus had wed two years earlier after patching things up and Izzy and Simon were the last.

A good few years had passed since then. Years filled with demon hunting and adventures. But soon the adventures occurred less. And less.

Why?

Well, for one, Clary and Jace had two children, Ruby, who had her mother's hair and her father's snarky mouth, and Jonathan, who had his father's eyes and his mothers artistic talents.

Alec and Magnus had two kids themselves. Surrogates. Toni had Alec's black hair and a mix of his parents' eyes, blue with slit pupils. His sister Cassandra had long black curls and amber eyes with normal irises. Both had chosen to bear runes and become Shadowhunters and had warlock abilities.

Izzy and Simon had twins, Felix and Derek. Both dark haired like their mother and dark eyed like their father.

Six parents (sometimes five) and six children around the institute. The Lightwood parents rarely visited and Alec was put in charge.

Jocelyn and Luke had 'retired' and visited occasionally to see their grandchildren.

So where does our story begin?

Let's say around seventeen years after the Sebastian's Uprising.

There was more talk amongst Downworlders of a growing power that had set it's sights on demolishing all Shadowhunters once and for all. A son of Lucifer, that's what they'd said.

Shadowhunters had mysteriously been disappearing from the face of the world. Vanishing as if they'd never been. Precautions had been taken up. More reinforcements to the various institutes. More training to prepare the young.

An unforeseen enemy had risen.

Like I mentioned, Shadowhunters had been disappearing, presumably dead.

One of the Shadowhunters in the Singapore Institute, a rather small group that worked closely with warlocks in the Malay Archipelago, by the name of Seraphina Wolfshadow had lost her parents to this force. They'd gone missing for weeks without a trace and were subsequently presumed dead. Soon after the Clave had issued a letter to Seraphina to move to the New York Institute for the time being lest she be targeted next. It was far enough and she would be safe.

She did as she was told, the cloud of grief hanging briefly over her.

This is where our tale starts.

...

Rain. Of course it had to rain. Seraphina stared out the cab window gloomily. Since arriving in New York via Portal, it hasn't stopped. The cold made her sniff. All she wanted was to curl up in her room with a mug of tea and some music on. Sadly, that could no longer happen. She was thousands of miles away from home in this strange foreign land, the city that doesn't sleep.

The cab driver pulled to a stop beside what appeared to mundanes as an abandoned building. He looked at Seraphina strangely. "Sure this is where you want to get off?" The cabbie asked. Seraphina ignored him, paid the fare, pulled the hood of her leather jacket up and grabbed her luggage before scrambling inside the gates of the Institute, invisible to the mundane eye. She hurried to the foot of the steps and risked looking up at the formidable cathedral-like building. A drop of rain splashed onto her nose and she ducked inside. She rapped her finger on the door and waited.

Click.

Whir.

Click.

Whir.

The mechanism worked away and the doors swung open. Seraphina padded inside and soon after, the doors closed shut, locking up tightly behind her. A man stood near her, ruffled black hair and cerulean blue eyes. "You must be Alexander Lightwood, head of the Institute?" Seraphina asked. "That's me. Please, call me Alec. Seraphina I take it?" Alec greeted her warmly. She nodded and pulled off her hood.

"Father, who's that?" came the voice. Seraphina looked to the left where a young girl, around her age, strolled down. Hair as dark as ebony and eyes of golden jewels.

"Our new arrival. Come Cassandra, meet Seraphina Wolfshadow of the Singapore Institute." Alec introduced them. "I take it there are few of you there?" Cassandra started off, shaking Seraphina's hand firmly. She nodded. Cassandra nodded back.

"Call me Cass." She smiled. Suddenly the elevator dinged.

"Ow! Stop it NATHAN! Or by the Angel I will not hesitate to punch your pretty face!" Came the feminine voice as five teenagers tumbled out of the elevator.

"Quit it you guys. We have a guest." Alec chided disapprovingly, giving a pointed glare to the blond who looked down at his feet.

"Everyone, this is Seraphina Wolfshadow from the Singapore Institute. I trust that you will treat her like family." Alec stated calmly and looked at Seraphina with a smile. "Hi. You can call me Sera." She greeted, jerking her head slightly. The blond grinned. "Jonathan Herondale. This red-headed ferret is my sister Ruby." He grinned cheekily, ruffling the red-head's hair, earning a frown. Ruby proceeded to give Seraphina a wave. "I'm Felix, this is Derek." The two dark haired twins greeted her. One with glasses. The other without. The one without had a menacing scowl etched onto his face.

"The last one's Toni, my brother." Cass said, pointing to the guy with the black quiff and strange blue cat eyes. "Is he...?" Sera trailed off. "We have two fathers. One's a warlock, Magnus Bane, the other's Alec." She explained and Sera nodded in understanding.

"Now, since we've all been introduced, let's get some dinner shall we? Toni, do you mind helping Seraphina with her bags?" Alec instructed, clasping his hands together. Toni nodded and looked over at Sera. He took her in. Dark skin like his father, long wavy brown-black hair and grey eyes.

"Toni." He held out his hand. She took it. "Sera." A mutual greeting.

He picked up one of her bags and started off toward the elevator. "So, what's your weapon?" He asked. His sister was more of the charmer than he was. "What an odd first question but alright... Double tipped sword. Darts." Sera replied with a shrug. "Nice, you should spar with Jonathan sometime, always cocky with his broadsword." Toni chuckled.

Seraphina smiled softly. They reached her room. The walls were painted a dark red and the furniture was mostly mahogany with some touches of glass. "This is nice." Sera commented. Toni grinned slightly.

"Well then, would you like to head down for dinner first or unpack?" Toni asked, setting down her luggage. She thought for a moment before gesturing to the door. "Food, please. I haven't eaten since this morning." Sera grinned shyly. "Right this way." Toni grinned and guided Sera towards the dining hall.

Everyone was already there. Including Church. Brother Zachariah had returned him shortly after kidnapping him.

There was a good ten people seated at the table and Toni sat down beside a man with a similar complexion to Sera. She sat down beside him.

"So this is the transfer?" A lady with ink-coloured hair and blue eyes asked Alec. Sera presumed they were siblings. "Yes. Seraphina, this is my sister Isabelle, mother of the Felix and Derek." Alec explained.

He introduced Sera to the twins' father Simon, who'd once been a vampire who could walk in daylight; Ruby and Jonathan's parents, Clary and Jace and his husband Magnus, the warlock.

They were all very welcoming. Dinner had been a simple meal of pasta and some garlic bread. Dessert, well, the adults rarely had dessert nowadays.

"So, what's your special talent?" Jace asked. Sera looked at him, head tilted in puzzlement. "You know, like how I'm snarky and charming, Clary can make drawings come to life, Alec is the blunt one, Magnus is the sparkly magical one, Izzy's the fierce on and Simon's the one who used to be a vampire." He explained. "Yeah right dad. I'm way more fierce than you are." Ruby rolled her eyes. "Ruby's the sarcastic one, Jonathan's the cocky one, Derek's the quiet one, Felix's the smart one, Cass' like Magnus and I'm the magical one. Which one are you?" Toni asked. Sera thought for a moment. "The musical one." She replied.

Jace looked interested and hummed in approval. "What instrument?" He asked curiously. "Violin." Sera replied. Isabelle smiled slightly. "Like Brother Zacariah. You've got Carstairs blood girl." She clucked, waving her work around. Sera looked at her questioningly but decided not to ask any more questions and eat something.

Diner passed rather well although Derek seemed to dislike Seraphina's presence.

"It's getting late, what do you say to some late night sparring cousins?" Jonathan asked cheerily. Ten past eight and that boy still had the energy of a newborn fledgling. Toni shrugged as did Felix but Cass smirked. "Why not?" She smiled, evilly might one add.

"You coming?" Toni asked Seraphina, taking to the girl immediately. She looked towards the direction of her room before thinking the opposite. "Sure." She replied.

The training room was wide and had recently been enlarged with wooden floor, targets, practice dummies that spewed fake blood and weights in one corner. There was a well stocked weapons room right beside it. Jonathan proceeded to fetch a broadsword that had a blueish gleam to it from the room. Felix sat to one side, somehow having produced a book from somewhere to indulge in. Ruby had propped up against the huge window and Derek and Toni stood off to the side. "Hey, Sera. How about a round or two?" Jonathan asked cheekily. Sera looked over at Toni, he shrugged with a small smile. She then grabbed a double-bladed sword from the weapons room after some searching, studying the blade.

It had a strong wooden handle that was polished to a shine and the swords were long and sharp. Perfect for sparring. Jonathan took up an attacking stance across the room as Sera held up the staff with both hands spread apart, prepared to strike. Jonathan let out a yell of attack and lunged towards her, swinging his broadsword down to strike Sera as she nimbly dodged and rolled over before spinning her staff nimbly between the fingers of her right hand and deflecting Jonathan's further attacks. He tried in vain to land a blow and all but failed to break through the new arrival's defence. Suddenly, he swiped his blade from side to side and barely missed hitting Sera by a hairs-width. He started picking up the pace, advancing forward slowly, the clanging of metal against metal could be heard over the din of their heavy breathing. Realising that her long staff was slowing her down, Sera did the least expected thing. Rolling to the side, she bought herself some time, allowing her to kneel on one leg and break the handle of the staff, splitting the wood in two causing splinters to fly everywhere. She got to her feet and using her newly formed swords, swiped out with accuracy, precision and speed, hitting Jonathan in the gut with the hilt of the sword, striking out his broadsword with her own before wrestling him to the floor, holding the tip of her sword to his throat, breathing heavily.

Silence was all that occupied the room for a while before a single clap was heard. Cass had started clapping and Toni, Felix and Ruby flowed soon after, only Derek remained emotionless. "That was well fought." Felix commented as Sera helped Jonathan to his feet. "Wasn't expecting that last trick, nice one." Jonathan huffed. "Next time, don't break the equipment." Came the low growl. Everyone turned their heads to look at Derek who had a stern expression on his face before he walked out of the room briskly. How he was related to Felix was truly a miracle.

"Don't mind him, he's just so picky." Cass told Sera whose gaze still lingered on the doorway, wondering why the Shadowhunter disliked her so much.

...

How was that? :D! Hope it was suitable? REVIEW PLEASE ;)