So, okay, I get that we're going for "intentionally amateurish" vibes here. I'm not the one to deny the pleasures of this kind of thing, but I think there are two very different modes of doing it: 1) using it as a license to make something absurd, unconventional, and over-the-top beyond what's acceptable even in humorous stories 2) using it as an excuse to not try very hard. Most of this, I think, has more to do with category 2.
On the whole, I feel like the VN just doesn't go far enough to really amuse. Every social interaction is weird (most conversations go like this: "Want to have sex?" "Sure.") and the banging scenes have a hint of surrealism (that is NOT how prostates work), but both the plot and the character drama feel understated. All the different elements don't work super well together, either – Buck taking a physical form feels out of place as the only clearly supernatural element. The pixel art, too, isn't really that charming or funny; it's just sort of bad to look at.