Suppose Yuna had chosen the Final Summoning.
Suppose the Church of Yevon had continued.
Suppose Auron had been forced to stick around, try one more time.
Suppose that this time, he has to kill an old lover.
Suppose that the Crimson Squad were not reconciled within two years, and wounds festered for much longer.
Main characters: Auron, Isaaru
Secondary characters: Rikku/Wakka, Isaaru's brothers, Elma/Lucil, the four surviving members of the Crimson Squad, Cid, Shinra, and... Sin.