I am struggling a bit to word the question so I’ll explain my thought process a bit.
I was thinking about Back to the Future style time travel where someone goes back in time, makes alterations to the past, and returns to a different life around the time they left but without actually acquiring the memories of their new life. Most of the time this happens at the end of the movie or series and they’re depicted only slightly confused but the viewer is given the impression they’ll integrate just fine. I’m wondering what’s out there for media where the conclusion of the protagonist’s adventures with time travel is just the beginning and the protagonist now has to struggle to make sense of everything.
Even with the short time loop/do-over premise that’s in movies like Palm Springs, Groundhog Day, and Omni Loop I feel like it could be difficult to interact with people afterwards. I imagine knowing everything about someone and having them regard you as a stranger would be frustrating and overwhelming.
From what I’ve seen the premise seems a bit under explored.
Steins;Gate and its sequel movie Steins;Gate: The Movie − Load Region of Déjà Vu
They did a good job with the gradual changes, but I couldn’t watch it all the way through. The main cast is just too irritating to watch. If I wanted to watch (the equivalent of) children deal with an interesting premise in adult bodies, I would just go back to Big or 13 Going On 30.
It’s one of my favorite anime, but the characters can be really annoying sometimes. Still, I found it to be less annoying later on, as the stakes got raised and things start to go to shit