I just finished the series tonight, after a LONG hiatus over Christmas.
The ending was a bit of a let-down, though now that I think on it this is both deliberate and brilliant. "Choose whether you want to live as a Devil of a Human, Ritsuka!" Of course, this means being separated from the Evil Sexy Student's Council - can't have our heroine surrounded by an unwanted harem and risk her normalcy!
From a writer's perspective, it works beautifully: it frustrates the viewer, to see the build-up towards Ritsuka Choosing A Boy fizzle out, returning the series to the status quo at the beginning. But this works very well with the hint at the end that Lord Maksis returns: he'll be the new narrative thrust for Season 2 and this can give a whole new reason to reintroduce the harem element (which the show's target audience loves so!) now that the demons have a reason to return to the material world and vie for her attentions.
I'm hopeful this does get renewed: there is a strong female fanbase in Japan (the fact that dreck like Diabolik Lovers or Amnesia gets tonnes of spinoff content speaks to this), and seeing more of this decidedly pleasant mixture of Gothic sensibility and a gutsy heroine who is neither sidelined nor victimized by her potential romantic partners would please me greatly.
Now if only I could convince MY Pomeranian to sing in a choral arrangement…
Definitely the Council song. Gloriously silly but the camp just sells the fact that this is joyous and earnest in its intent. This is a Takarazuka Review, complete with sexy bad-boys fawning over the heroine. Having the pompous demons preen over their evilness while posing like k-pop models is and singing of their dark intent is just loveable.