Well that's it, I'm guessing /a/ can't ignore CR anymore. In fact they're two chapters ahead.
They also added Arpeggio and are two chapters ahead as well. That makes 12 new series this month so far.
Seriously, can rippers get their act together?
Why is Ch.20 shown? Where's 19? I can't read 20 before 19.
Because only the latest chapter is free and they don't have any of the previous chapters up anyways.