If I were to provide some constructive criticism the protagonist seems kind of a too much of a "outsider" trope of the generic loner self-depreciating protagonist who don't think much of themselves you see far too often in visual novels. I feel like he could either use a bit more fleshing out why they're so depreciating or think of themselves as unpopular or unworthy, or could grow a bit more of a spine or confidence.
Maybe its just cause I have too much sense of self-worth but it can be kind of grating trying to relate with cliche protagonists like these who have no real ambitions or go on a internal monologue of how mediocre they think they are, even though their situation is better than most people's these days (such as having friends, a supporting family <both monetary and emotionally>, a job/education, etc)