Bikini Warriors Special
Japanese title: ビキニ・ウォリアーズ
Alternative titles: Bikini Warriors Episode 13
Type: Special
Source: Other
Episodes: 1
Status: Finished Airing
Aired: Dec 9, 2015
Duration: 4 min
Rating: R+ - Mild Nudity
Studios: feel., PRA
Producers: Hobby Japan
Genres: Comedy, Fantasy, Ecchi
Themes: Parody

According to the official Hobby Japan website, an unaired episode of Bikini Warriors will be bundled with the Blu-ray volume to be released on December 9th, 2015. 

(Source: Hobby Japan)