My theory, at least what I've had for a while:
Jin before becoming a psycho was actually a person who sought to do good. Reason why he was student council president, model student and a great soldier. However those achievements were always very shallow for him, he never felt he was doing something truly good for others, helping in an important way.
From childhood he actually got along with both Ragna and Saya at the beginning, but something must have happened between him and Saya, something particular from this timeline, my guess is that Saya knew she was something special or Jin's power of Order was different this timeline, perhaps more powerful than any of his past incarnations (because if it was the same as other loops why would Rachel ta…Read more >