How to Tame My Devil Slaves

Lilith is a villainess in an otome game called Demon Butlers, and the game has already decided she dies. Shirley wakes up in her body with the terms laid out: turn the bloodlust of the four demon butlers who serve the house into devotion, or the ending stands. She cuts herself and heals one of them with her own blood. Then she wakes Yegard, the most dangerous of the four, because the Demon Control Trial ahead of her has been rigged and she cannot pass it alone. She is ambushed on the way, with none of the four beside her, and has to work out whether the hold she has on her monsters is real.