As befits a show shows central message is balance, this episode is evenly split between White and Black. First the White: elemental spirit-summoning Elf mage Alantia leads the defense of Metis against a Bahamut-style dark boss named Bahl. Queen Iris eventually shows up and puts on quite a light show, but isn’t really able to put a scratch on Bahl, which is concerning to say the least. She’s worried the Progenitor Rune is being taxed to its limit, and her kingdom can’t afford to lose it.
The would-be Prince of Darkness’s story is progressing at a much faster clip. This makes sense, as Iris is already Queen of Light so he has some catching up to do. Still, the difference in the pacing of the light and dark halves is noticeable…and not necessarily complementary. Valas impresses upon the young prince that becoming king is about more than just being good with a sword. It means learning how to govern and pitching in when needed (as presented in a montaaaage).
This “king of the people” angle is seemingly at odds with the present King of Darkness, who is little more than a smoke monster with a Sauron-like “cover everything in darkness” policy. He considers future generations like the prince to be unnecessary. Where “Egoism of the world” Bahl fits into this isn’t quite clear yet.
One assumes from the OP and ED that the prince and queen will meet someday, but for now, the prince settles for meeting Princess of Black Groza, AKA the “Gray-Green Demoness.” She’s a bit spoiled what with her squad of loyal troops, but when the Prince rescues her from a stray monster, she proves quite amiable to the lad, and tells him of the official competition with other potential successors in which he must participate in order to become an official Prince of Darkness.
After two episodes Shironeko Project: ZERO CHRONICLE remains perfectly watchable, if unexceptional and a bit sluggish. I continue to be driven to watch by the simple premise, Iwasaki Taku score, and promise of the eventual meeting of Iris and the Prince. Mainly I’m neither turned-off nor busy enough to drop it!