This is in addition to the existing cast from the drama consisting of:
In other [Shiritsu Bakaleya Koukou] news, the DVD/Bluray boxset of the series will be released on 29th August 2012.
There are both limited and regular editions available in both DVD and Bluray. The limited editions come with a 48 page booklet and making of disc. All editions come with bonus photos (different types for limited/regular editions).