If the person you play againt brings a stick to a fighting game on home console, the you know you're fucked.
Back to topic, I wonder for how long they're going to stretch it with this kind of drama. Specially if the threat was made out of jealousy. If the other girl was indeed after Mimika, and it actually works, that'd confirm she is not really in love with Yuzumori, and simply had the hots lor little girls.
Regardless of what might be happening with all this time traveling/dimensional crossing shenanigans, I'm just happy that Rin is finally becoming an interesting character. As justified as it might have been, her prior emo personality was simply too boring to see on a main character, specially when it's used to force drama.
Edit: I'm not entirely sure why are people insulting A-chan at this point, with so little data. For all we know, she could easily be the one triggering the time travel/dimensional crossing for Rinko's sake.
I'm not sure what's better: if Rin actively encouraging to mess with people's heads for the heck of it, or Yukko going like "I don't want to use these abusive powers... except with my neighbour. Let's fuck him up"
As much as I believe she is in fact a Succubus, her "lewd body" compared to the other girls could be also related to the fact she had to repeat a year, and is therefore a year older than the rest, while her attraction to the harpy girl could very well just be a result of being a lesbian. I hope she's indeed not a succubus, since it's more interesting that way... And also because lesbian succubis are kind of like Homura Subaru's thing.
Playing the games helps. To help with the name memorization you also get the game and stage they appeared in, their song, and bullet pattern. Trying to 1cc the game will pretty much guarantee you'll see the names enough to remember them.