Little Savior (Mystic Messenger x Reader)

Y/N L/N lived an ordinary life in Korea: straight A's in her college classes, a semi-stable job, and a healthy obsession over a Korean idol group called Mystic Music.
Like others, she is completely devastated when the group breaks up after the death of their manager, Rika. What she doesn't expect, though, is for all of them to suddenly show up at her school...as her classmates! How will she deal with her new, and odd, classmates? What will happen when she learns about their pasts and wants to help them?
They say that love can heal any wound, but can you heal theirs?