In this chapter, Yeonhong and sia discuss the news that miri has been chosen to be the next mom candidate. He feels a little emotion when he sees that sia is the only woman in the group with the same age and background as miri. He also feels that the two women have become friends already, and that they are getting closer and closer to each other. He tells sia that the fate of their family depends on the fact that they still want to change the course of the future. sia tells him that she does not want to discuss her personal life, but that they need to be "honest with each other" as long as they want to "change the future." She also tells him about the history of their relationship, saying that they had become lovers after they graduated from school. She adds that the current mother candidate scores more than any of the previous moms. She also says that they have to "check it out a bit more" because they are looking at the "original history" of the relationship between the two of them. He says that the "butterfly effect" can result in "tremendous changes." He then asks sia one more question. He asks if the time limit for the mother's disease has been set, and she says that it was the time that dad had inputted into the medical records. He adds that it would be best to make a decision by the end of December.