It's all pretty functional and competent. The sprite animations feel like an efficient form of characterization, and the writing doesn't have outstanding flaws.
I guess the primary thing on my mind is this: The fact that there appears to be nothing interesting or distinctive about the protagonist's life is genuinely pretty bleak in a way that certainly stands out as a bold artistic choice. He works at a nondescript office job, gets the most generic takeaway ever (chicken and... mashed potatoes??? did i forget already), has a roommate we don't learn much about and who comes off as a cordial but somewhat distant friend, and the evening's big surprise is sitting down and playing some well-known NES titles.
While I recognize the fact that the story wants to be a documentaristic portrayal of an ordinary guy's life, I think that last thing in particular pushes things pretty far towards mundane and generic. Coming up with fake games might have helped give the story and the memories it wants to convey a sense of specificity – like this, it just feels like the characters are playing Mario. Everything is sort of so real it comes off as collective cultural memory instead of a person's childhood experiences, if that makes sense.
Anyway, I'm sure you could argue that the choices the VN makes result in something interesting. I guess my concern is mostly whether we lose the genre pleasures of slice-of-life in the process. The tone is just so somber and the story so devoid of engaging details that even the escapist return to memories of better times hardly feels like a relief.