Seems okay so far. Here's some criticism should the dev ever show up and read this. If not, it'll at least serve as a reminder to myself...
Should you decide not to peek on Mia in the shower on day 2, the shower sound will continue looping into the next day.
People repeatedly say "set down" instead of "sit down".
Sakura gets mad at MC for not joining the band, even if that subject was never raised in the first place.
There is a lack of vocative commas. I think I saw one, which was probably set accidentally.
A lot of lines are long-running sentences that could benefit from being split into two (or sometimes three) smaller sentences.
This is a bit of a weird criticism, but it feels like everyone tries to call each other by name as often as possible. No one ever just says "thanks", they gotta say "thanks, (name)". It feels very unnatural.
Finally, the animations are giving me trouble. The "intro" animations that just pan up a character's body turn into more of a slideshow, while the shorter ones tend to feel a bit sluggish... But I can't even see how they're supposed to look by playing them with VLC (which only shows the first frame) or any other video player (which slow down to a crawl after about 1 second), so maybe the shorter ones do work correctly? Probably not though.