Let me start by saying I've only played once so far (I wanna replay but I gotta get to the other 20 games I haven't checked out yet adfh) but I really liked what I see! The characters are cute and tbh if you decided to just end it as is or just extend the date for a bit I feel like it already tells a sweet and interesting story.
I like how you used the text funcionalities and the background movement, maybe you should also look into transitions a bit more, the start and end do feel really abrupt.
tl;dr: Good work!!