-In the OP, the government official looks a bit like our MC.
It doesn't fit in with the 'physics' of this world since (?)everyone's jumping into their former selves. The idea of the MC toying with his past self to trigger his own adventure isn't new however. Killing mum could have been the only way to save Kayo.. or something? Still, no evidence of double-selves in timelines yet.
-Satoru's memory could have been fuzzy from the start
because of the effect of various time-leaps and intrusions - which would mean that everything's pre-destined.