Demon Slayer: Starting at Midnight, I Love Only You

Bian Xin was the most gifted illusion-breathing trainee in her generation of the Demon Slayer Corps, but she fled the selection trials because she couldn't bring herself to kill demons. She thought she could live an ordinary life, but then she met Muzan and became half-human, half-demon. Pairing: Giyu Tomioka... (The ellipsis is because I'm not sure yet, but Giyu will definitely have a romance arc.) Friendship: Sabito survives, and probably all the Hashira will survive too. I'll do my best to change the characters' fates.