Reincarnated: The Vampire Princess Would Never Do This

[Fast-Paced + System + Reincarnation + Another World + Ruthless Protagonist] At twenty-five, office drone Lin Wan dies full of resentment and is reborn as Illya, a vampire princess of the Nightfall royal family on the continent of Oren. Bound to the Source Devouring System, she can grow stronger without limit simply by drinking blood. She looks sweet and flawless, but is dark-hearted and devious within. After taking a Moonshadow catgirl as her follower, she rises to prominence across the continent through her royal bloodline and masterful schemes. Everyone around her wildly overinterprets her every move. In the end, she carves a bloody path to become the most powerful force on the continent of Oren, beyond anyone's ability to stop...