Just Another Heartbreak (Five Hargreaves x y/n story)

Five's leaving hurt everyone in the Academy but it hurt Y/n especially. They had both been very close from a young age and even loved each other but then five left and Y/n was heartbroken causing them to run away shortly after. 17 years later, their father is dead and everyone has come back to the academy only to find number 8 hasn't aged. But how? Things go smoothly or as smoothly as they can, until Five randomly shows up again looking 16 and saying the world is ending. Will Y/n help their siblings to save the world or will all the heartbreak they have faced force them to step away and just let the world end, even if it means the end of their sibling's and the boys she once loved lives?