This "Dark" version was not what I expected, it was not "Dark" by the standards of this site, it was very light, I say this to inform those who are afraid of being too heavy.
This version seems to be the vision of a dream of a father or stepfather imagining what could happen if he doesn't control himself, and it wasn't Dark at all in my opinion, it can be said that it was the girls who seduced the protagonist, and not the other way around, that's why I said that it seems to be the vision of someone's dream, maybe the author's.
I imagined that in this Dark version I would see the protagonist forcing himself on younger girls who have no interest in him, to say the least, so the fact that the girls took the initiative to seduce the protagonist was definitely not what I expected.