[Metalsnakezero]

Spoiler for Ep 7:

So my theory of Eri being an ex idol wasn't right but having a history of high class dancing is a lot more interesting. Instead of her heritage being some background the creators made up by actually reflect on the character's views and that helps add to her reasoning for her dislike of not just the idol group but to every other group. However, now that we know she was the one who filmed them, it obvious she has interest and it just take a little more push to get her to join the group and improve it. Also Evil groping Tojo