Can't these 2 ever have a serious conversation? I mean Ayano seemed worried for the future and Miyoshi says her 'something cool' that amounts to 'I'm not going anywhere' - but then before they can talk, she immediately derails this important talk herself with something inane.
Is she really that scatter brained and easily distracted - or was it a deliberate change of subject for some reason?
I seem to remember several other cases where she's done the same too, like these 2 are not allowed to ever have serious talks.