グッドルーザー球磨川

A one-shot starring Kumagawa from Medaka Box. The story takes place at Suisou Academy, 2 months prior to Kumagawa's enrollment at Hakoniwa Academy, and shows events leading up to the shutdown of Suisou. Notes: - Part one of the "Good Loser Kumagawa" series. - After premiering in the Winter 2012 issue of Jump NEXT, it was included in Volume 15 of Medaka Box.