We don't really block content in that way, we more like reduce the amount of content you get with some characters based on if you skip or deny them, we don't penalize making a harem for yourselfAs Motkeyz is saying, you must be on Nika's route, because besides the sex scene they express the love they have for one another.
I did a save to bifurcate Nika's love route and the friendly one, but quite frankly I don't remember anymore which is this point.
Motkeyz Is it possible to know which routes with other female characters will be blocked if we choose Nika's route ? Or that would reveal to much of the plot?
/A