Jisoo is a girl who seems like she got things figured out, and Mino, this boy is just starting to live a life again. And one thing that's common between the two is that their bad choices will always haunt them.

Eight years. I've been friends with Song Mino for eight years, and this is the first time he held my hand while walking.

Song Mino was a middle child.  Jiyong, Jennie and Mino all have different mothers. Jiyong is the only legitimate child of the Kwon patriarch, who died 3 years ago. But before his demise, he admitted to his wife about the other kids he had with other women. Instead of hating them, the Kwon matriarch searched for them, to see their condition and give Jiyong the siblings he never had.