I Saved the Dying Grand Duke and Became the Grand Duchess

I died of overwork after pulling an all-nighter in a 24th-century laboratory. But when I opened my eyes, I found that after 17 years of nothing but mistreatment... I was possessing the body of an Omega sold as a 'human sacrifice' for a terminally ill Grand Duke! According to the laws of the Kingdom of Rolander, I am in a situation where I must be buried alive on the day the Grand Duke breathes his last. The Grand Duke's appearance that I faced as soon as I entered the mansion was utterly wretched. A living corpse with quadriplegia and a festering lower body, neglected by servants who didn't even clean up his excrement. “Please… stab me to death with a knife.” Looking down at the Grand ...