I must say I really liked the Art-Style of this Game ( Especially the little Changes while the Date is going on). Will play it multiple Time for exploring the differences with the other answers.
I am not sure what to think about this "Game"... If you do not see it as a Game and more like a "Quiz", it is really good ( The atmosphere is done pretty well!).
A short but well made game. The Puzzles are interesting and well placed.
Only complain I have was the story: I kind of lost track or I missed something ( especially why the Protagonist can decide for a certain action ). But still good job on this game