The Draco Trilogy- দ্বারা Cassandra Clare 

Yes, I KNOW this isn't related to The Mortal Insturments, but Cassandra wrote this, AND IT IS THE BEST অনুরাগী FICTION I HAVE EVER READ!!! Here's a link on how to download it. (Can't find pdf version!)
মূলশব্দ: ড্রাকো ম্যালফয়, cassandra clare, the draco trilogy