Hild is feeling lonely and desperate for someone to take over ruling hell from her when Ranma is dragged to hell by a demon taking his payment for Nodoka’s wish after she was killed by Nodoka, Genma, Ryoga and Ukyo. Ranma is saved from her torture by Hild who comforts Ranma and offers her the chance for revenge by becoming a demon and her heir. (Ah! My Goddess Crossover.)