Wally West had passed away, and there was no stopping it; despite how the usually bright and cheerful Bart Allen blames himself for the death of his favorite cousin... and they expected him to fill the suit that had lost meaning since the passing. Only one person ever noticed this, only one person could help this.
The same person the Impulse had come to the past to stop from creating chaos in the future.
(I do not own DC or any of the characters)
(I update as often as I can, but will sometimes put the readers in some suspense in the series, so enjoy!)
(Also: side-note, Jaime and Bart's perspectives are shifted throughout the chapters. In odd-numbered chapters: Jaime's point of view. In even-numbered chapters: Bart's point of view)