Board Thread:Questions and Answers/@comment-5924243-20130326012410/@comment-4631119-20130330154733

In my opinion, this season the series is focused on how their group managed to save the school, so there won't be any in-depth explanation about the character other than the most important ones.

If this series got another season, or multiseason series, then I believe it'll be the time for in-depth stories for the rest 6 main characters.