Master's Mysterious Little Wife

She was sent to an unfamiliar man's bed, schemed by her half-sister, forced to cut the abdomen and donate the kidney, losing the child and the whole body.
Outside the operating theater, she discovered in despair that the child's father was actually her future brother-in-law.
After changing their appearance, the two people who were supposed to be strangers, because of his son, who was swaddling in swaddling clothes, developed feelings that they should not have.
It was only when the truth was exposed and he resolutely left that she understood that everything was just lying to herself...