Ep. 12: Those Sacrifices Saved from Hell by a Black-Winged Devil That Devours Other Devils Will Revere It as God Regardless of Whether Its Act Makes It a Servant of Heaven or Merely a Savage Cannibal

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Karen and Heiki begin their first day of work as Akashic's personal assistants when Akashic receives an important call. The evil society Zet Arc seeks to buy out Agastia to expand their reach into Asia. When Megistus and Akashic don't respond fast enough to Zet Arc's offer, their leader Zet Acht decides to attack Agastia's assets with his army and perform a hostile takover. Agastia's monsters end up fighting back against Zet Arc's monsters, with Black Lore and the Pilia Magia girls joining them. However, Zet Acht decides to take the battlefield himself and evens the odds with his battle suit, as well as Zet Arc reinforcements. When all seems lost, Megistus reveals that Agastia has convinced both heroes and villains across Japan to fight together against Zet Arc's forces across Japan, not a in battle of good vs evil, but of Honor vs Honorless. Blader himself comes forward to attack but is quickly defeated by Zet Acht. Doctor Sadamaki and Hoen then give Kuroitsu a device that lets her transform into "Black Blader," while Blader himself changes into his second form. The two are able to combine their power to destroy Zet Acht. After the battle, Kuroitsu discovers that the Black Blader outfit can't be removed without a software update. At the end Blader discover's his crush's ties to Agastia as she comes as a customer once again but in the Black Blader suit. (Source: Wikipedia)