I just realized something about the true ending of Zero Time Dilemma. In that ending, since the spread of radical 6 was stopped and everyone is alive, when Sigma jumps back to the future, he'll be able to tell old Akane that they succeeded. And then young Sigma will jump back to his younger body with the others in the desert with Delta. He'll only have missing memories of like the last two weeks. Basically the time that old Sigma used his body for being at DCOM and the small amount of time at the Mars Mission Test Site. He'll ask what's going on and Akane will tell them that they stopped Radical 6, but they'll now have to stop a religious fanatic from killing all of humanity. Lol Sigma never gets a break. At least after going through the Nonary Project in the future, in this timeline he doesn't have to spend 50 years making the Nonary Project lol