Surviving as a Wizard of a Ruined Family

Introduction to the Work: I possessed the body of the youngest child of a famous ducal house. The problem is, that fame isn't due to money or power, but because of a curse. 'I can't just die like this.' For the sake of a peaceful life ahead, I have no choice but to break that curse in advance. However, the atmosphere of this family is unsettling. --- Do not wander the hallways at night. Looking out the window is also forbidden. . . . Even if something comes searching for your room, never open the door.