I really like the lore and all the artwork + transitions! Little details like turning the TV on and then off when you decide to leave at the start really feel polished.
I know you have italicised the stream of conciousness / exposition parts of the MC but perhaps they could be even more obvious, like different background and/or different color text just to make it even clearer?
Also I know its a VN so I guess the MC will be appearing in various shots, but I am casting my vote to make the gender customisable :) I can make an exception for other games that are 3rd person RPGs but it feels weird playing text driven narrative as the opposite gender. Also love interest gender being customisable probably also should be a consideration for you?
I guess you can ignore the above if you are not intending on commercialising this or there really are loads of scenes where swapping out the graphics would be an issue.. Personally I think its a barrier for me to purchase a VN/IF without that customisation though and I know its the case with others.