I have to agree.. After all that buildup, seeing her blackout-drunk and screaming like a banshee in heat was quite disappointing and not at all what I expected her first sex scene to be like. It completely discarded any pacing the game had up until that point and made me lose interest immediately so I just stopped playing.I'm sorta out on this VN now as it had a good buildup only to crank it up to 100 in a second. The buildup has to have more happen or the start of the real content has to be a bit slower.
It's so confusing too when you consider the devs own words, "I want to make the transition from "innocent girl" to "dirty slut" as smooth as possible". Yet they decide to turn her into a complete whore who smiles at the thought of losing her virginity for money, pretty much overnight.. I'll never understand why they decided to progress this path first, instead of one where her corruption happens more gradually as it has been for most of the game so far.
The scene itself wasn't great either, like you already mentioned. In my opinion, getting her so shit-faced drunk that she can't even think for herself anymore is probably the cheapest and laziest way to get her to the point where she would believably be willing to have sex. It requires virtually nothing in the way of writing since her brain's basically turned off at that point. There's nothing exciting about that, not to me at least..
It would've been so much better to see her natural and real reaction to her first time, instead of whatever this booze-fueled craze was supposed to be.
Guess all we can do is wait for the other path(s) to be developed more and hope that those turn out to be better.