Robotics;Notes has got the mystery part down pretty much pat.
sharing a hotel room (that expense further evidence of Mitchie's remorse over his poor stewardship, though seriously Mitchie - one room and then a warning not to fool around?) but really, this scene more than anything cements the notion that Aki and Kai are more than anything else a very close brother and sister (in fact, it's quite clear that Misa considers Kai a little brother). I do love the bond between Kai and Aki but I just don't see any romance there, and you know - that's just fine. Not every series needs to have romance just because it's about teenagers (and there's ample chemistry with Kona should this one decide to go that route).
win over one little boy, the rest of the crowd is a harder sell. Meanwhile Misa-nee is in town as Exoskeleton puts on a grand display around its new "Sumeragi" robot, and Kai manages to stake out the garage where she's parked her car and guilt her into a drive around town with Mizuka's last words as ammo. But like so much else in this series, we get more questions than answers from Misa. I still get the sense that she's trying to protect her sister and that, more than anything, is the reason for her coldness. But there's also the sense that she's trying to send a coded message to Kai, over and over - it's clear she considers him crucial to whatever's happening with Kimijima Kou and the Committee of 300.
Kai and Aki spot Misa backstage in an exo-suit and call out to her. She speaks in a relatively kind tone but refuses to turn and face her sister and "brother", and then Sawada shows up with a gun and seems intent on taking her into custody. So apparently these two are no longer on the same side, if they ever were - but whose side should we be rooting for, if either? Perhaps it's simply a case of Misaki having been perceived as betraying the Committee by telling Kai too much - but that smells wrong to me, or at least incomplete. We have Misaki's last words (whether of the episode or altogether depends on how good a shot Sawada is - I strongly suspect the exo-suit is bullet-proof)) to try and draw on - she asks Aki when the rocket launch is - but while there's surely significance in the question she chose to ask, just exactly what significance that is mostly eludes me. Fitting that R;N should choose to end with a question this week, as there are more of them floating around than ever.