Y/n is a 19 year old human and Scott McCall’s younger sister who is Derek’s anchor and mate but she doesn’t know it yet. Derek wont say it out loud that she is his mate and anchor but he shows it through his actions of constantly touching y/n, y/n calming derek down and derek being super possessive and protective about y/n. It’s obvious that Derek’s anchor and mate is y/n to everyone except y/n.