“Fangirl*, a 2013 young adult novel by Rainbow Rowell, follows identical twins Cath and Wren as they prepare for college. The book explores themes of family, love, and mental health. Cath is a quiet, introverted fan of a Harry Potter-esque series called Simon Snow. When Wren decides she doesn't want to be roommates in college, Cath is forced outside her comfort zone and must confront questions about her identity and independence”