I've reincarnated into the young daughter-in-law of a villain, who was taken in for his deceptive plans. The problem is, I'm terminally ill, so when I become an adult, I'm going to die. 'Luckily, I know the cure, but...' If I don't die at the right time, my father-in-law, no, the villain Duke Icard, might kill me! And for the sole reason of achieving his goals! But what kind of kid would be able to adjust to this kind of household well? "I want to live with Father and Evan for a long time, happily... cough! Cough!" I'm 'that kid'.