Lily's Prongslet

Harry never expected to be de-aged and sent to the past, but it was an occupational hazard with Luna there. Lily never expected to be interrupted mid-tirade by the appearance of a young boy, much less one who was her son from the future. Even more so when it was also the son of her arch-nemesis. And definitely not that it would change her opinion of James Potter forever. FOUR-SHOT.