Arcadia's Gift

An accident in the Room of Requirement and age old words "Maybe I don't want to be human anymore!" come to bite Harry Potter in the ass as he finds himself irrevocably stuck in the 1970s, in his parent's time at Hogwarts, where things are little different from the history he knows. Perhaps a little too different.. HP/SB Slash, TimeTravel/AU, Creature!Harry, Non Epilogue Compliant.