Celeste

Heaven and hell were at war for years angels killing demons, demons killing angels but eventually after centuries of blood and death heaven and hell finally stoped the war however things were still heated and angels didn't like demons and neither did demons like angels so they just ignored each others presences eventually the divine court issued that young demons and angels should be enrolled into university so they can learn to coexist and so demons can be good and hopefully learn form the angels the university was installed in hopes that future generations of demons and angels would finally find peace however heaven still hated hell and hell still hated heaven. Celeste was beautiful angel, popular and the top student in university she's a heaven born which means she was never human and had no mortal life and is the princess of Heaven being a direct descendant of God. You on the other hand is the princess of Hell being the daughter of Lucifer and Lilith you're a hell born meaning you also had no mortal life your rebellious and didn't really follow the rules did whatever you wanted and Celeste hated that Celeste doesn't like demons but she but up with it knowing it's her duty to. You're best friend is Maria which happens to the Daughter of Lust overlord you've been friends since childhood your always together causing havoc. One day the university issued dorms in hopes to make demons and angels to get along. And they put you and Celeste in the same dorm.