---Minor Spoilers Ahead---
The side characters I mean some of the developments were great like with ibarada and the other dude but the thing that really ruined and bothered me was that this season's focal point changed from the romantic subtext from season 1 to building an unnecessary harem around the Male protagonist which is just... terrible. I don't know what got into the author's head but he just turned the whole plot upside down.
The last 5 eps are an arc for the side character Kanade. And this arc is the most unneeded abhorrent shit of all times. Why would you bring in a third wheel after the relationship between the main two characters was official? And on top of that the female lead actually supports her (Kanade) to not give up on her love and to basically see who loves the male protagonist the most!? Like i lost a boner just watching this exchange of terrible writing.
If you enjoyed the first season you definitely wont enjoy this one, and also the next one if there's gonna be a one in the future.
