This is the continuation of OOTD but that duology was set up as parallel universes. They were Villains in OOTD and now they're heroines. The albums are designed to look like comic books and the schedules were all released to look like Comic panels. It's going to be interesting to see what the MV actually looks like. My guess on the themes is that since OOTD was all about the superficial and the dangers of it, that this is going to be about being true to oneself, or something along those lines.