Dude, just say that her mic is on on her ear, problem solved. It's easy, why make big deal of this?
Also, let me take the role of Devil's Advocate, because that "crossdressing boy", it really looks like MC is two timing Takane. You could say anything about that trap boy, but he has a reasonable motive to suspect that MC is a bad person (we know that he isn't, even if he is stupid and kinda bland).
Last, but not least, Takane is too good for MC, she should get a better guy, like Vina.