I can confirm 2 things:

A) There is Anti-Piracy beyond what prevents the rom from loading on some cards. The WoodRPG firmware and derivatives (such as WoodR4) are affected. Specifically, it is impossible to raise the affection levels of any of the girls when playing it on a flashcard that does not remove the AP, meaning you cannot go on dates, cannot get ANY contact (except Rinko's, since it is given to you in an event that can be triggered without any indication Rinko is there), and cannot get a confession of love from any of the girls. Incidentally, it would also appear the "boyfriend checks" are somewhat based on affection levels.

B) The patch 5 posts above removes this bit of anti-piracy.