Akuyaku Reijou Level 99 Watashi wa Ura Boss desu ga Maou dewa Arimasen

Yumiella Dolkness is your run-of-the-mill villainess in an otome RPG—except for the fact that she`s also secretly the overpowered hidden boss. But Yumiella wasn`t always Yumiella, you see. In her past life, she was nothing more than an introverted college student and devout gamer. So when she realizes that she`s been reincarnated as a hidden boss, she`s determined to steer clear of the protagonist...