Demon King Akashi Seijuro, he lives in the underworld, and he is looking for a queen, but first there must be concubines. Kuroko Tetsuya, a male that looks like a female, a male who has been mistaken for a female his whole entire life has been chosen to become a concubine for the Demon King. Inspired by "The Selection" by Kiera Cass (it's an amazing book to read).