I wonder if Sayo will be able to go to battle in her Sayo Gundam (the moment I saw those head-mounted gatlings I couldn't help but call it Sayo Gundam... or maybe Sayondam ?? Akamatsu truly outdid himself here, merging Ultimate Cuteness with Ultimate Firepower. The thing that truly shocked me was that Haruna actually felt regret for summoning that "Negi Kissing Terminator 2.0". You don't usually see Haruna regretting something.
Also as halberdiers said Kotarou isn't a mage but a Ki user so I wonder if forming a pactio is even possible for him... or maybe we'll get a hilarious situation where it'll Kotarou doing the Minister job to his Magister Natsumi, though I don't recall Natsumi practising magic so... but who knows.
