I am in ep 4, and although I'm not dropping, I'm gonna say this: this is not a continuation of season 1. It may as well be a bunch of OVA's put together in a list a call them season 2. It is really just fanservice.
Basically, watch it if you want to get "busy", otherwise, Maken-ki ends in season 1. In ep 3... well... catgirls, for you to get the gist.
Again, THIS IS NOT A CONTINUATION AT ALL. PURE FANSERVICE. THERE IS NO STORY WHATSOEVER. REALLY, IT IS BASICALLY FANSERVICE TO WHICH YOU CAN F** TO EVERY 2 OR 3 MINUTES.
So far only ep 4 doesn't rely on fanservice. It is the only one that does have a plot and focuses on characters.