That's great because it's a totally different approach than what "the big three" use. I don't mean this in a bad way, but they are a bit more manipulative in the sense that they go for the 'girlfriend angle' or really try to be sexy or daring, etc. Compared to them, Nao seems more natural.
Basically, the starting position in their minds is different:
Noa: "this person is already are my fan, so what can I do to make them enjoy the experience"
Milky/Akarin/Suzuran: "how can I make this person my fan/come to see me again"