The two leads seem decent enough, but everyone else in the class honestly feels like arseholes.
Edit: Skimmed through all the chapters to check whether the rest of the cast got better, but nope. The two main characters have a hate-love relationship which isn't too uncommon (a good example of it would be the book "Miss Julie" by August Strindberg).
For everyone else though they are seemingly void of emotions and behave in a weird judgemental and stuck-up manner. Really bothersome, and makes the two leads seem like the only human characters in the manga.
Currently I would not recommend this manga, and am unlikely to change in the future. If you can ignore the supporting characters there is a cute love story in there though.