The Siblings is a Mortal Instruments fanfiction about what would have happened if Clary had chosen Sebastian over everyone else. In my version Clary has turned her back on her good side and given into the evil that her brother has brought. It is up to her friends to try and bring her back from the evil that she once tried to fight. But how can she return with so much blood on her hands? How will she forgive herself for everything that she's done? Will she even want to? Or is Sebastian's hold on Clary too great for Jace, Alec, Simon and Isabel to fight?

Jace and Clary broke up. Alec is straight. What will happen when Alec and Clary realize there may be something more between them?