This was a pretty OK episode. I like the fact that we get a glimpse into Inori's feelings and inner conflict; if only we had gotten them sooner. Her in 'battle gear mode' was nice to watch.
And now they insert in some 'secret ancient organisation.'
The scene during which Arisa's grandfather charged in and got shot was kinda random. I also don't really get Arisa's devotion to Gai - it felt awkward and sudden.
Judging from this ep and the preview, it seems that Haruka might have a change of heart and attempt to help Shu.