Crowds are the Loneliest Places

Popular/Loner AU (PLAU). For his whole life, Jackson Overland has been cursed with a lonely lifestyle and, as a result, social anxiety that keeps him locked within his world of solitude. It' only threatened to be broken when Hiccup Haddock, a teen in Jack's class with an army of friends, tries to befriend him and show him a way into the world he had never been exposed to.