But it has to be through the lens of adolescent experience.At a fundamental level, YA is about coming of age, which typically means your protagonist is a teenager but can extend into their early twenties.Though once you have made a name as a YA writer, pretty much everything you write will be published as YA. I do not think Marcus Zusak's The Book Thief (Knopf, 2006) or Margo Lanagan's Tender Morsels