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

Yumiella Dolkness remembers that she is living inside an otome RPG where her role is supposed to be the villainess and, after the Demon Lord falls, the secret level-99 boss. Wanting no part in that fate, she plans to stay away from the heroine and spend her life quietly.

Then her gamer instincts take over. Years of private grinding push Yumiella all the way to level 99 before she even enters the Royal Academy. The impossible result convinces classmates and nobles that she may actually be the Demon Lord. Now the socially awkward girl who wanted to disappear must survive royal attention, suspicion, and the protagonists of the game while trying to prove that overwhelming dark magic does not automatically make someone evil.