Ookiku Furikabutte: Natsu no Taikai-hen - Mokuhyou

Unaired episode 12.5 included on the 7th DVD & Blu-ray volume.
Kurata from Bijyou feels guilty about beating the crap out of other players. Abe’s accidental injury strikes a chord, and he no longer wants to be involved with Roka’s dirty schemes.
(Source: Crunchyroll)