DVD specials. 

Episode 2.5: Defeat of Red / The Hot Spring in Paradise 
Episode 3.5: Horrible Green / Violet Has Slept 
Episode 4.5: Movie Trap / Dream Carnival

Naoto Ooizumi is the writer of the CosPrayers TV show, although this is a secret known only to the producer of the show, Mitsuki Ikuta. He has a crush on one of the actresses in the show, Natsumi Yagami. As the show proceeds so does their relationship, with many wacky twists and turns along the way.
 
(Source: Anime News Network)

A short 10 minute film by the non-existant "Houchiku Movie Corporation" 
After destroying the dark castles and finally defeating the enemy, Scarlett leaves the group to continue on. While Koto and her friends are together, she meet up again with Scarlett expectantly. A new, powerful enemy is back and must be defeated at all costs, he is more powerful than all of the others... but it will take all of their powers to combine and work together as one...

Koto unknowingly seals away the Sun Goddess Amaterasu, and now she is in a different world and can't return. Meeting priestesses who combat the evil in this strange place she learns that Black Towers throughout the land keep Amatersu sealed away and are guarded by evil monsters. Koto must now find a way to help defeat these monsters and return the world to the way it was.
 
(Source: Anime News Network)

Mitsuki Ikuta works for the Houchiku Corporation, making movies. To all who know her, she is perceived as being a very infantile woman, still wearing childish fashions. A fan of the detective movie genre, she suddenly finds herself chosen to be the main producer of a new film - but it's a "hero movie" (a genre generally considered childish). Determined to succeed, regardless, she takes on the job.
 
(Source: Anime News Network)

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