The Precious Sister of the Villainous Grand Duke

También conocida como: Agdang daegong nim-ui gwiha di gwihan yeodongsaeng · Дорогая сестра злого брата герцога · Милая младшая сестра злодея · 악당 대공님의 귀하디귀한 여동생 · Villain Duke's Precious One · Akdang Daegongnimui Gwihadigwihan Yeodongsaeng · Der Schatz des bösen Herzogs · A preciosa irmã do vilão grão-duque · 悪党大公様の可愛い妹 · 악당 대공님의 귀하디귀한 여동생 (Novel) · Villain Duke's Precious One (Novel) · 悪党大公様の可愛い妹（ノベル）

I became the sister of the villain, who shed no blood or tears in a war-ridden novel! I thought I was born again as the youngest daughter of a noble family, but I'm the little sister of a villain who's only being used! A baby's body too fragile to survive in the Lagrange household, a brutal family that makes children fight for successors... I've decided to stick to the villain in order to live! I need you to be my guardian until I run away from here. Raise me, villain!