Chapter 1: Are you kidding me...

A guy named Yuki, who was mostly average except for the fact that he had a photographic memory, worked as an accountant. He lived alone and had no family or friends. One day after work he gets visited by truck-kun as he was crossing the street. Naturally, he dies and I think you know where this is going
He finds himself in Uzu as a baby, right before its destruction. That isn't good.
I'll try to make this 'realistic' in the sense that the mc isn't a dumbass as much as possible, though please criticize with solutions in mind so I can change it appropriately