I can see why volume 2 has higher ratings, there's some BL! Who doesn't like some awkward BL moments. The antics in volume 2 are heightened a little. And there's some back story to the crushes, so that was very amusing to read.
Memu is continuing her relationship with Aoi and it's cute when she tries to protect him. He has a weakness! Is very funny that you realize he can't be around girls. I really like this storyline. The story behind his eye patch is hinted a little, but I still want to know why he has to wear one.
Mitsuru still has a crush on Shino and you find a little back story to Shino and *gasp* is related to Aoi?! Oh how everyone is tangled together. The author is even giving more page time to the girl bully, which I find amusing to read too.
Overall, volume 2 really surprised me and I wished I checked out volume 3 from the library so I don't have to wait.