@Opticalwinter absolutely agree with everything you've said. None of these girls feel even a little remorse for treating him like they did in the beginning. Black-haired bitch was blackmailing him and was almost on the verge of ruining his life, "just teasing him"? What a cunt, and no, she...
Meh, usually in these kinds of stories the first girl is the one to get with the MC (at least the first one we meet... Nisekoi, Toradora...)
In this case imo its not even a competition.
@Tanzklaue last time I checked Nagatoro never tried to blackmail, extort and make her sempai out to be a predator (i.e. heaps worse than the bullying she has ever done)