Vividred Operation 11 finally spit out the reason of the show to exist :
Akana has a boner for Rei.Now we knew this was a Ecchi show that was set to blow your Yuri radars, but I am happy that they didn't do any existential Japanese melodrama BS and kept it simple.
But now I am scared of crows ... the crow in this show if fucking EVIL


I don't know they are going to save Rei from the new Crow-Angel of death, but it might involve Rei's key and VividBlack. Which would surely make Dr Freud giggle like a maniac.
This show pretty much play on Evangelion ideas of "defying the gods", and the "Test" is rather interesting in a way that points to these uber powers are maniacal jerks in an Agnostic kind of way.