Think it feels like ending because we had the Uber study for thing arcs and now she is going to college... I forgot do we even know what she wants to study in college?
Well, assuming it isn't actually ending and will continue, it's because a major part of the two MC's lives are about to end, and FMC is ruminating on the end of some relationships and friendships as she moves to Tokyo - everybody will be busy with their own lives, and they can't just visit her like they're all saying they will.
Think it feels like ending because we had the Uber study for thing arcs and now she is going to college... I forgot do we even know what she wants to study in college?