Undercover Butler to the Grand Duke

"Do you remember me?"

Reborn in the land of her worst enemy, Sia never expected the ruthless Grand Duke Vallot to look at her with such intense, lingering gaze. He knew the former owner of her body—and he's harboring secrets that run deeper than war.
Sia has one goal: Become his top butler, bide her time, and take his life.

Two years later:

"That I’m obsessed with my butler? If anything, I'm the one clinging to her."

She came to claim his head, but she ended up stealing his heart instead.

Original webtoon