That's some bitchy behavior, even calling her own brother a pervert as if he's a stranger. Stuff like that could ruin a person's career.
Shes's already been rejected, probably multiple times even. Yet she still continues, things like that push people away. It'll do the opposite of what she's trying to accomplish. She's becoming quite frustrating.
Also, Itsuki... for God's sake find the courage to reveal yourself. It prevents a huge amount of problems, but I will admit that it's not the easiest thing to do...