Twitter translations:

>Rika-sama was furious at the merch table during M&A (meet & autograph), when the show started, I figured, ‘Ah… they’re going to treat this like the final episode,’ and I mentally prepared myself even before the show began. If they ever feel like doing it again, they should. As a fan, all I can do is wait and look forward to it.
>She said she won't appear anymore, but I still want to see HYPE 4, and I want Rika-san to be in it too.
>Rika: "The script arrived just one hour before our first rehearsal, and I was like, 'We're already on the move! There's no way I can read it now!'"
>On the morning of the event, Pami said, “Rika-san doesn’t have to appear in the final video,” and that ended up being the last straw — the two got into a huge fight.
>Pami was like, “If Rika’s not in it, then we’re not doing HYPE today!”

So misao told Rika the morning of the show that she didn't really have to appear but then hit her with the "if you don't show, hype is cancelled" bullshit?? What a mentally ill woman