I Was Reborn With All Max-Leveled Classes of Mage, Warrior, Rogue, and Healer! - Chapter 231 - Hidden Mission

The light is here because the darkness exists. Just like that, the human realm exists because the demon realm is here. And in the great palace of the Blade Empire, a crown touches the peak of its glory before it falls from its grace. Lush Von Blade was the royal crown prince of one of the greatest empires on the southern continent. He is loyal but betrayed.On the other hand, where even the Gods fear to set a foot on, a demon lord abides. His grace and cruelty have been unseen for centuries. He is the supremacy in the three realms. While Lush is the light, he is the darkness. Each exists because the other is here.

The first time he saw this woman, she was holding on the arm of an old man who looks like he’s about to enter the grave at any moment and smiling like a blooming flower;the second time he came across her, she was wearing a nurse’s uniform and flirting with a man; the third time that they met again, she appeared before him, as his blind date! Guan Ling Chao, the current prince (young master), an outstanding army officer, due to his family’s (elders’) threats to forced marriage, had no choice but to go on blind dates. Yet after meeting hundreds of different women, she was the only woman in the action group

- Description from Novelupdates

After a shocking reincarnation, our hero opens her eyes to a new (and messy) world the last thing she remembers is reading Lady Viper’s Vow, a dark fantasy novel about a cruel, misunderstood villainess and her path of doom. But when our protagonist finds herself reborn right in the heart of an attack, she’s moments away from a second, way-too-soon death. Just as she’s about to face the end, a mysterious “system” pops up with a single mission: Level Up or Die Trying. It’s bossy, snarky, and her new best friend. As she levels up into a borderline-cheater powerhouse, she discovers her fate isn’t to be a hero, a princess, or even a sorceress, but to protect the one person no one ever expected her to side with: the villainess herself.