Well, if you take a look at the game site, Asami is part of Shuusuke's path (you can pick between Sana and Shuu as main characters in the game), so it's not THAT surprising that she's tied to the twins rather than Sana. If anything I thought up to now that her role in the anime was somewhat odd considering what the site said.
But I never imagined it'd be this way, haha. Can't wait to watch the episode.
Now I dunno if I'd call it a plot twist though...I guess it is, but it's possibly because they had 0 foreshadowing, except from the OP and the game's site which not everyone will read. Then it is by definition, yeah. Forget what I said.
Let's not forget this anime is mostly just a way to advertise the game too. It's been an enjoyable ride all things considered, without taking it too seriously, and I got to see the closest thing I'd ever see to an animated Tsugumi. But, it is directed by the Ever17 dude after all...the plot was never going to be that cliche'd and normal. It had to have some weird stuff.
