When I first started the episode and it was about some idol company sporting event, didn’t really had much hope for it, but lol, it turned out to be quite a lot better than expected. Especially with the other idol groups appearing and the cheating attempt. Iori’s characterization really swings all about though, was kinda annoyed with her being such a stuck-up for half the episode, then she became awesome at the second half again.
Heard Kana-tan too, surprised to see the DS game’s 876 group making a cameo appearance.
Hell, even Jupiter did too. Guess they are really pandering to all the fans.