辺境の貧乏伯爵に嫁ぐことになったので領地改革に励みます•Henkyou no Binbou Hakushaku ni Totsugu Koto ni Natta no de Ryouchi Kaikaku ni Hagemimasu

The Villainess Turns the Hourglass

Aria Roscent mercilessly bullied her stepsister Mielle and paid the ultimate price for her misdeeds—but not before Mielle revealed that she’d manipulated Aria into harassing Mielle in the first place! Instead of dying, Aria is sent back in time and gifted a strange hourglass with mysterious powers. Now, Aria’s just got one goal: to embrace her role of villainess and utterly destroy Mielle’s life! <br><br> (Source: Yen Press)