Elf Princess Nina

Nina, an elven princess was forced to became a sex slave of an evil prince Kyle. He is one of the 7 heroes who defeated the evil overlord. After that battle he starts a conquest of the continent in order to unite the humans who live on it. Standing against Kyle is only his younger brother Syll, who is also one of the seven heroes. Kyle stole his throne, but failed to kill him. He brings his anger to Nina and with the help of a dark elf dominatrix. He make Nina's life miserable.