The game is unique, in it's very own way. For RenPy standards the horror effects are extremely heavy (still within limit for stable feeling adults, I would say). What I like most is the idea with the sound thing - creative, really.
Warning - spoilers ahead:
What I don't like very much is that the sexual harassment (tried rape) by Rupert is not taken serious enough in my opinion - the choices (if you can call them that) should be more exemplary. Like, the MC should really have the option to deny all Rupert's requests from the beginning without reaching a bad end. I think in real life every girl (rightly so) is told to refuse and run away, doing so shouldn't lead to Rupert winning. Whether this route might only get a quick good end (cause the main story will become pointless) or a complete other outcome, does not matter, as long as denying Ruperts ill behavior is rewarded.
And, there really, really should be a skipping possibillity in the game options, I know it can be turned off but its rather uncool if you are forced to re-read all seen text again for the x time you try to get another end.
The other thing - neutral - I just found out about existing parallels to other stories: For the range of horror effects you surely got inspired by DDLC a bit, didn't you? Nothing wrong about it (DDLC was my very first VN years ago - I thought it was a romance and mistook the content warning as some 3d illness stuff like the Wii console shows at every launch, surprise surprise). What makes me wonder more is whether you took some ideas by "Death Note" too. When the 'police officer' came into play it suddenly felt very familiar: I noticed how the name Lolite sounds similar to Lawliet and some phrases really make me think of Lolite as an altered Kira. Is my guess just coincidence or are there hidden allusions?