I’m led to believe that the higher-ups of the army or the Empire are up to something. In episode 17, the Himmel drug that is being sold in the sewers is supplied by Silver Wheel. An underground group, it seems, that probably consists of rich people. I thought the long-haired guy who met up with the president of the sewers lines company was Alice’s fiance. After watching the recently-released episode 19, I realized how wrong I was.
If he was it would be super cliche. 
Episodes 18 and 19 are filler episodes. Episode 18 is cute though.
Stekkin’s so childish. She should watch what she says or Mach’s will get hurt more. XD Episode 19 is somewhat serious. I’m not really interested about Alice’s engagement unless it’s part of a big happening. The fat guy in the ball is though… The people that the big guy spied on has something against/for him. I didn’t quite understand that part.