Yes, this was just an "episode 0", which was pretty much a quick recap of S1, from Kurumi-Chan's view. It contains all the hilarious representations of Sawako-Chan, just like the first season. For the lovers of art, it still has all the little hexagon shimmery pastel shapes everywhere on the screen, haha.
The music, if it is even possible, has gotten even better, especially the OP, and the ED is also good.
The new season has really kicked off with a big start! Very excited for episode 01, "Valentine", and yes, it will be all about Valentines day!