Uniting Both Realms

She was the weak one, the cursed one, the sister no one wanted. So they sent her to Hell in her sister's place, dressed in white, marked for death. She expected to be destroyed. Instead, she survived the schemes, grew wings no angel had ever grown, and watched the Demon King fall for her. When he nearly died protecting her, she didn't run. She united Heaven and Hell and took her place beside him.