The Villainess Truly Has No Idea At All

An ordinary otaku female college student is reincarnated as Dorotea di Rosmarino, a noblewoman. Dorotea enjoys cheating through her wonderful skills and knowledge from her previous life, while scheming to adore her adopted sister as well. Meanwhile, her adopted sister Luce fears such a Dorotea. Luce is also a reincarnator――Luce was the heroine of an otome game, and Dorotea was the villainess.