Supporting Actress Survival Handbook

*She has traveled into a strange world which form a female novel and become the second wife of the male MC. According to the original plot,she will causing the male MC's family to perish and ending up miserably.
But it has changed.
who said the male MC is aloof and indifferent,he is 100% fond of his wife.
From now on, she decide: “the female MC is a passerby. I will be his only love.”