[DezoPenguin]

Spoiler for Epsiode 9:

Well, well! Ryo decides to come out of the shadows and join the other Guardians, who themselves officially decide to man up and turn on Oni-baba. Ohmi is officially revealed as a double agent seeking to recover the artifacts (not the world's most unexpected plot twist, admittedly).

Lastly, Drei makes his move at last, with Zwei on his side and Eins used as a catspaw.

And Kiyono's really an adult woman and a Bureau agent. That actually was a surprise, but logical enough: every other side had agents at school (the Guardians as fellow students and Vier as a teacher) so why not the Bureau?