Luo Xu has dreamed of having a sister to control him since he was a child... He didn't expect it to come true during the summer vacation of his freshman year of high school. Is it a surprise or a worry?
Murong Yunzhi had the same secret as Luo Xu, but she never dared to tell her best friends... Until she met the "other" Jiang Yun...
Su Qi and Jiang Yun have been good friends since childhood. They grew up together and are twins in the eyes of outsiders, but is this really the case?
What is Luo's father's ulterior secret? What is the relationship between a kind father and mother?
Purpose: Accept the differences in the world