This first OVA focuses on Hunter and Valkyrie, who were guest characters in the television anime, as well as two new characters: Cleric (voiced by Aimi Tanaka) and Kunoichi (Yumi Hara). Hunter and Valkyrie meet Cleric and think she will join them as their healer, but something is strange about her. Then they are attacked by Kunoichi, who seeks legendary bikini armor.

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A black knight and a necromancer appeared before the braves. "Losing confirmed event" "Medium boss correction", black knight attacking while repeating mysterious words. In addition, during battle, I started naughty narration. Will the braves surely be able to escape! What?

Necromancer who will change what I like to undead. That innocent magical power was directed to brave people this time! Undead cats called up in large numbers attack the brave. Cats who start licking the strange place. Necromancer's attack is trying to undead the braves in that skill!

Black Knight and Necromancer attack the Bikini Warriors yet again. Black Knight decides to tell them her story despite them being uninterested. She was once an average school girl from Earth who fell through a portal into the fantasy world, losing all her clothes in the process. Demons captured her and after empowering, brainwashing, and molesting her, sent her out to spread terror and chaos. She recently broke free of the brainwashing and formed a partnership with Necromancer. After finishing her story, Black Knight is annoyed when Necromancer claims her story was made up before she and the Bikini Warriors fall asleep, leaving her ranting that selling the story could give them great profit.