Yeah I felt the same, I'm used to choice based visual novels but i liked this kinetic one.
Absence of choice wasn't really my point. Just no "wow I didn't expected that". It's "encounter, initial bond part, find a problem (breakup on it), struggle aaaaand happy ending. Happy ever after.
I like having "you were looking over this angle, and it looks like an happy ending, buuuut let change angle and it's a nightmare ! What'll do ?"
Well mostly, 200 problems could have happened, the story seem a bit over-simplified. But I guess short story can't overload the narration.