Lol has Aya finally come out of the closet? XD
Entirely by accident, yes lmao. So deep in her feelings she didn't even stop to think about how obvious she's being, staring directly at Mitsuki while exactly describing the scene in front of her while talking about her crush.
I wonder if Chiziru's gonna be like "...why the fuck did you hide this from me, did you think I'd be a homophobe??" It'd be a very zoomer thing for her to do, and I've certainly seen it happen irl. This assumption that "well obviously Aya would be out to me if she were talking about a girl" might explain why Chiziru took until now to notice, despite it being pretty goddamn blatant even before now. Like "there's no way 'onii-san' is anybody I know because surely my BFF Aya would just tell me if it was".