The sounds of screams filled Alec's ears, his entire body was shaking and he had tears in his eyes. Jace put a hand on his shoulder. "Magnus will be alright. We'll get to him" he said softly.
"If we're not killed first. That thing will destroy everything in its path. I...I can't lose him Jace" he replied shakily.
"I know" Jace had to be calm, Alec was in a complete panic and they needed a rational plan. Alec tried to leave the spot they were hiding in, Jace pulled him back and held onto him tightly. "Don't. Magnus can take care of himself, you're in no position to fight, you've got no weapons and you don't even have your stele" he tried to reason but Alec only had one thought on his mind, Magnus...
He got up and ran right to the chaos, the institute was overrun with demons. He wouldn't survive long unprotected, Jace rushed after him. Bloodied bodies were thrown about the place. He got distracted when he saw Clary bleeding out. He rushed to her, when he got closer he noticed her eyes...that wasn't Clary. He then realised it was a trap. He saw Alec from across the room running to Magnus who was motionless on the floor. "Alec don't!" he yelled and run as fast as his legs would allow him, he pulled Alec away from him, so of course Alec resisted and before Jace had time to tell him it was a trap he had stumbled backwards and the demon took him as an easy target. It attacked him in an instant all Alec could do was watch the horrific scene unfold. "No! No! Jace!" he yelled through the agony, it felt like part of his soul was being ripped away from him, like his body was being torn apart. Just as quickly as they had come, the denims had left. Alec realised he had a seraph blade in his hand, he had stabbed Jace, the bloody bodies were gone. It was just Jace on the floor. Something had gotten into his head. He held him in his arms and cried. "Jace I'm sorry please don't leave me" he pleaded desperately. Clary walked in and a look of horror filled her face.
"What did you do?!" she screamed and ran to Jace to be by his side. He was rushed to get medical help but he was practically already dead and Alec could feel it. How had that whole thing been in his head? He couldn't accept this. When Magnus walked in he ran to him and hugged him.
"I-I killed him...I. .I thought..." he was shaking uncontrollably and could hardly breathe. Magnus held him close.
"I know. It's alright. Whoever or whatever done this to you won't go unpunished I promise but you can't blame yourself"
The first chapter is kind of awful and I might just make this a random oneshot but please review and let me know what you'd like me to do and if you're interested in an update. Please no negativity just constructive criticism :)