Katrina Potter was just another girl going to Hogwarts School Of Witchcraft and Wizardry. Except she was Harry Potter's twin sister. This isn't a problem until she develops a crush on the guy her brother absolutely hates. Draco Bad-Boy Malfoy. They haven't talked since Christmas in fourth year but that didn't stop her feelings from developing. Now they're new Potions teacher, Horace Slughorn, has made the two partners for the whole year. This could be the year he finally acknowledges that she's still alive or it could be just another year at Hogwarts for Kat. Who knows?