Demon Slayer: Reborn to Achieve a Happy Ending

P.S. Two female leads, two sworn enemies on the human and ghost sides, and a double storyline with everyone doting on the protagonists.

Human storyline: A justice-driven, slightly unhinged, neurotic strong woman.

Ghost storyline: A no-nonsense, dark, domineering, unreasonable, beautiful yet tragic female ghost.

[The ghost-side protagonist is pure evil, an absolute villain who will never be redeemed. She is guaranteed to die at the end. Maybe there’ll be a happy ending for her in a bonus chapter?]

After her mother is killed by a ghost, Dan Yu Ling chooses to become a Demon Slayer. During a mission with her companions, she is intercepted and killed by a mysterious, powerful ghost. Reborn for a second life, she vows to protect her companions, break through the wall of a bad ending, and give them a happy ending!

Pain is nourishment. No matter how deep it runs, the harm it causes is the same... I only want to erase the source of the pain...

Can I?