If he does. he should explain why.
I was joking about number 3, but episode 13 (and the whole Taku arc) hints at it. I know it's not gonna happen, though.
I think Kuroyuki is pretty kuudere, but she just got past most of the kuu part since episode 1. Even now. she seems to be always in control and quite cold and blunt to others except Haru.
In any case, the point of my previous post was not to classify the 3 characters, but to say that they are part of Haru's harem, which they obviously are. I don't mind omitting the character archetypes at all.