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Risa is the original CAST. She was forced into it against her will by the Photoners.

EP5 Spoilers: Xiera removes the inhibitors on Regius and Maria when Shiva first shows up at the end of EP5. They can be removed on a per individual basis.

Luther had a hand in that.

Case in point:

World Map:
https://livedoor.blogimg.jp/m1025humvee-pso2/imgs/8/9/89b53e01.png

EPISODE5 Ending Credits:
https://i.imgur.com/2tTqX9W.png

Ash: "Hm, Luther appears to be up to something. I should probably check on Matoi or something, but oh well. Time to eat!"

I wonder when we're going to get the second OP and ED (UniVerse and それいゆ-Dear Destiny-). It would have made more sense for them to start using those right at the start of EPISODE2.
Also, Episode...

The anime is doing an excellent job at making Luther and Regius even more unlikeable than they already are.

It's weird because I'm fairly certain that The Animation used the actual game terminology.

I don't like Ash either. But how good is the fact that Matoi is an actual person in this version of the story?

I am absolutely ecstatic about Matoi's new costume being available in-game, even if the chances of getting it without buying the BD are low.

However......