So you would have think and so did I. I thought he would still be the weak kitty he was in season 1 in season 2.
Imagine my surprise when I started season 2 and found it was not so. The multiple side characters were right. The MC fit right into the power structure in the school in his second year Aka season 2 after adapting to it in season 1. In many ways, while the songs/chants/spells will be missed, the MC seems a better and more powerful character than ever. You see that right off the bat when someone challenges him in a fit of random (misdirected) anger and he goes, "sure, why not. Now or later?"