I'm The Devil - Chapter 58: Titanomachy 6: A Year Later

Calamity descends upon a a tranquil world in the black of night, transforming it into a death game! This a a true apocalypse, but this is not the end of humanity!

- Description from Novelupdates

Due to rejection of the heart donated by her ex-boyfriend, she married him and supported him with her own blood for two years. After the rejection disappeared, he unexpectedly filed for divorce. She readily agreed and left, revealing to him how he gotten the heart. When he learned the truth, he was furious and disgusted with her.Five years later, she pretended to be dead and returned with their child, disguised as an ugly nanny...

Li Ran traversed to another world and became the Holy Son of a Demon Way Sect.

The system has awakened, and the first task released is actually to fall in love?

The Sect strictly forbids relationships between men and women.

Li Ran took the risk of being expelled from the Sect and wrote a love letter to his junior sister, but it was sent to the master by mistake!

[Trigger Warning: This dark fantasy romance contains mature themes.]---BLURB:IN A WOLD OF FORBIDDEN LOVE AND HIDDEN TRUTHS, ONE WOMAN'S DESTINY WILL CHANGE EVERYTHING.Ovelia’s life is shattered when she is sacrificed by her family to secure peace between humans and werewolves. Bound to Ace, the future Alpha King, she enters a marriage built on duty, not love. But when Ace’s wolf chooses her as his mate, their fates become intertwined in ways neither could have predicted.As Ovelia navigates the treacherous world of werewolf royalty, she faces betrayal, kidnapping, and the lingering shadow of Ace’s past love. But the greatest danger lies within herself—a secret heritage that could destroy the fragile alliance between werewolves, witches, and elves. When Ovelia’s true identity is revealed, she must flee for her life, only to discover she carries a new hope for the future.With war looming and enemies closing in, Ovelia and Ace must confront their pasts and fight for a love that could unite their fractured world—or tear it apart forever.---