Well that's how most AVNs work, because they need to sell them to... well us?
The "issues" sort of become apparent when rather than just being a lewd/sex generator VNs also try to paint a realistic scenario that allows to move a story forwards.
Nobody is going to start these discussions in threads about VNs where "After X years MC is back to live with his
landlady and needs to rekindle relationships with her and his
roommates, while making new friendships"
BADIK is not like that, while still remaiing an AVN with some of the genre's trappings, I personally find it entertaining, not last because it allows some fun conversations with you folks.
I do agree thou, it's highly unrealstic in a college's setting that hot looking women all apparently happen to be celibate exactly when the MC shows up, but is not more realistic that they all fall for him.
Fair enough he has an outstanding DIK, but is not like he goes around helicoptering it to everyone, he still needs to first interact with most of these women and he's not (like many AVN MCs) the perfect example of dude who can fuck everyone.
The combination of the 2 points above is what makes an AVN less credible/"realistic" (at least for me), but back to the start... it's part of the course.