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

I reincarnated into the "Villainess Eumiella" from an RPG Otome game. In the main story, Eumielle's merely a side character, but after the ending, she reenters the story as the Hidden Boss, a character on par to the Heroes with her high stats!! Lighting a fire in my gamer's soul, and taking advantage of being left on my own in my parent's territory, I train! Train! And at the end of my training... By the time I enter the academy, I managed to reach level 99. Though I had planned to live out my days as inconspicuously and peacefully as possible, soon after entering the school, I'm suspected by the Heroine and Love Interests of being the "Demon Lord"...? Source: MU