OmgĀ this sounds so cool
I'm so in love with Love Live and Disgaea, so i decided to combine their concepts and voila
Somewhere in an alternate universe, there's an underworld filled with scary creatures full of pride and ego called the Netherworld. However, the creatures of this Netherworld show their pride... in the weirdest, yet most fabulous way ever.
Yes, in the Fancy Netherworld, demons and monsters alike compete and show their noble pride by LITERALLY BEING SPARKLY IDOLS OR HARDCORE ROCKSTARS. Gradually, some humans who are sent to the Fancy Netherworld are being subordinates of these idols and stars.
That's what i could think of for now, i'll edit this post gradually