Tokubetsu Byoutou is based on　BISHOP’s1) game of the same name, released August 27, 20042).

The two part animated series was released in Japan by MS Pictures’ BOOTLEG (ブートレグ)3). The first episode, Capsule 1, went on sale November, 2007, and Capsule 2 was released March of 2008.

The OVA features the antagonist, Makimura Ryouko (槙村涼子)4), as a futanari.