At that point Selebus would just be working on two games in parallel instead of one game, which would slow down development tremendously. No thanks.
Yeah, but we don't know if that means that every single Sensei she's ever seen has been the real Sensei, or if some of them were "fake" Senseis like she thought we were at the start of the game. The metaphysics of what happens when Sensei resets haven't been clearly established.
That happy scene is almost certainly not literal history. Most of the happy scenes are heavily symbolic, dreamlike events that clearly have relevance to real things that literally happened, but where it is ambiguous how much of what we're seeing is real, how much is imagined, and how much is meant to represent other things.
That said, the game timeline is pretty consistent. Sensei is 31, he and Niki dated for five years including when they were in high school, the accident happened eight years ago, Ami was seven at the time, she's a high school freshman now. All of that lines up if you sit down and work it out.
(By the way, it's generally considered better form to edit pre-existing posts rather than make four posts in a row in within minutes of one another.)
