Druj is Obfuscating Stupidity.
Given how she already salvaged a truck's worth of Mystic Gems, and her growing suspicion that her beloved Jahy-sama is losing her edge, it becomes increasingly likely that Druj is really only pretending to appear as dim-witted. For what reason is unclear, but it could be conceivable that she would want to usurp the Demon Lord and rule the Demon Realm for herself. Alternatively, Druj becomes the Demon Lord completely on accident.
As the Rule of Funny would dictate, given how much luxuries Druj received in the human world, her becoming the Demon Lord as a result of pure luck would be the ultimate shock. Both Jahy-sama and Gabriel Dropout take place in the same universe.
Both series center around Demons and share voice actresses. The Being of Light and Maou-Sama are Ahura Mazda/Ormazd and Angra Mainyu/Ahriman
The demons already have Zoroastrian names, so the most logical conclusion is that the two deities are also Zoroastrian.- Though it is slightly overselling mostly due to Jahy being the one to really run things in the Dark Realm while Maou would sit on her throne for the most part. But given how Jahy was the one who personally "interpreted" what Maou wanted, it seems less likely that Maou is actually villainous. The only remotely bad thing she does is eat the Magical Girl's lunch.
- Consider that Jahy and Saurva are different flavors of incompetent and Druj is pathetically easy to manipulate. If Maou is Angra its clear this is a case if The Devil Is a Loser...or she's embracing the sins of Gluttony and Sloth.
- Though it is slightly overselling mostly due to Jahy being the one to really run things in the Dark Realm while Maou would sit on her throne for the most part. But given how Jahy was the one who personally "interpreted" what Maou wanted, it seems less likely that Maou is actually villainous. The only remotely bad thing she does is eat the Magical Girl's lunch.
