Heartbreak Girl (Calum Hood) [FINISHED]

Kelsey is Ashton Irwin's sister. He likes to keep her more of a secret to protect her, as she is quite fragile, medically. When she finds out that she only has six months to live, Ash invites her on tour with 5SOS. When she falls for one of the bandmates, how will either of them handle the heartbreak that is to come...