There are very good reasons why people cared about Yui but don't care about the new girl
To being with, it's not a "new girl", we get "new girls". Why would you care about a girl that is not even a member? She doesn't have a sing with Moa like Yui did, she's unironically less involved with the group than the fucking Kami Band is, this combined with the fact that the "new girl" gets replaced every time Kobra skips his meds
>but she's hot and has booba!
Does it really matter when the black, formless, boring trash bag outfits make the looks of the girl impossible to distinguish? In the end it's just a black blob bouncing around, no shape, no curve, and not a single inch of skin that's for sure, so yeah, it could be Ayaka, Mariri, Hana, anyone with that outfit would look the same, just a black formless thing