The Big Four/ ROTBTD. Hogwarts AU. Jack, Hiccup, Merida and Rapunzel are all best friends, and are all overjoyed when they are accepted to attend Hogwarts together. But, How will their friendship be effected by the Ministry of Magic's new laws of segregation between houses, and the growing pressure on the teens to conform to their 'destinies? Rated T for possible language later on