Wait a sec though... Natsuki has been posing as a boy when she hung out with Kanae, so short hair.
At school, she wore a wig, so it's like she's posing as different people. There's her actual persona, and then there's her boy identity, that she uses to go out with Kanae.
How did the girls at her school discover her haircut and not only not question why she wears a wig at school, but confront Kanae about it? That part really confused me.
Maybe there's nothing to be confused about, but it just seemed really weird to me
The haircut thing confused me too at first. Here's what happened:
* Natsuki had long hair to begin with.
* In order to present herself as a boy, she cut her hair to be short and purchased a very long wig identical to her previous haircut. Apparently, it was so good that the girls at her school didn't notice. (This is hard to believe but I guess we're supposed to suspend our disbelief.)
* The girls at her school confronted Kanae about spending time with Natsuki, not about her hair.
* This causes Natsuki to remove her wig and reveal her secret to Kanae.
Honestly, I was most impressed that Natsuki was willing to confess everything in front of girls from her school in addition to Kanae.