Reincarnation of the Possessed Family

“Please, propose to me.” I became engaged in a contract marriage with the villainous second male lead after being possessed by a book. My role is a terminally ill character who dies before the original story even begins. During the contract marriage, I need to deal with my original family, who treated me like a pushover, and find a cure! But... My husband, who is known as the 'Devil' in the Empire, turns out to have regressed. "Become my wife and live quietly for a year, like a dead mouse." Remembering his past life, he hates me because he considers my family his enemy. The son my husband picked up is said to be reincarnated. "What was your original name?" "My baby. So cute. So pr...