I like crossdresser senpai, think he will be a good friend.
And I agree with @majere in the crappy senpai situation, he gives Hime the creeps, and is problaby not a tsundere case, I used to think a lot about the people that I disliked when I was a teenager (before I discovered that it was a complete waste of time) and I can assure you I was never found any of them attractive.
And I think cross-senpai sentence pretty much sums up the situation, she doesn't need to be happy when a creep calls her cute.
I'm confused as to why anyone would think Hime thought the senpai was anything but creepy when that was exactly what she said in her internal thoughts??
That aside though, I was kinda hoping Hime was non-binary since I related to her the most when she was wearing the boys uniform haha