I've been having this idea where the MC is immortal and has the ability to travel through time/dimensions and he goes through this one life with his friends and family and eventually he decides to move on. Except each dimension/each time period he goes to no matter where it is, the figures that become central to his life are the exact same people from his first, as in they look exactly the same yet they have different personalities, so his best friend from one can become his greatest enemy and vice versa. Or his friendsall act entirely different from how he knew them.The first time he flees almost immediately yet once he realizes he can't escape them he decides to stay and somehow try to adjust to these new people who look exactly the same as those he knew yet act completely different. It's an idea about the belief that relationships can transcend lifetimes, except in this instance they are, literally? Any ideas/tips on how to make this work/flesh it out?