What I'm really interested in is what Tsumugi might say if somebody asked her how she would have responded to Amamiya's confession if she did it before the string kicked in. It seemed like there was something between them back then but Tsumugi just completely locked it down as soon as the string...
A theory I've had about what happened to Shien is she got caught by the witch hunters after covering Tama's escape in the past and ended up selling out other witches to save her own skin.
Mode's backstory showed the witch hunters were interested in capturing and questioning witches to find...