Each chapter shifts focus between Suuko, Ryuusan, Mariko, and the Locodols. The last two chapters I read actually focused on new characters who seemed to be "normies" but fans of the Locodols. Also Suuko's last appearance she'd decided to go to the Ramen Festival. Maybe she'll actually meet the idols she's been supporting.
As far as I can tell the story is fairly grounded, so I kind of doubt something cliche with happen between Mariko and Ryuusan. But Suuko's annoyance with Ryuusan might be something else, when her sister asked her if she was thinking about a guy she gets flustered.
It's fairly good so far, even if nothing yuri will come out of it. The art style reminds me of Watamote.