"Well, Hades is where sinful humans go when they die! Then they become Prinnies and spend years and years being derided and abused while they work to pay off their sins and reincarnate! Desco liked it there. She used to play in the lava pools! And Desco is also a teacher at Evil Academy, a school that is also an entire Netherworld! That's where Desco met Princess Sapphire, and her husband, and Dean Mao, too! Dean Mao even ended up creating Desco's little sisters, the Mass Production Units, out of his burning pathos!"