As Sunja's story unfolds in the TV series, viewers are introduced to several significant people in her life, including her son, Mozasu (Solomon's father). Mozasu is the owner of several pachinko parlors and appears to be close to both his mother and his son. So far, Mozasu is the only son of Sunja presented in the show, but in the book, she has another son.
In the book, Sunja has two children, Noa and Mozasu. Noa is the child of Koh Hansu (Lee Minho), a Korean-born, Japanese fish broker whom Sunja fell in love with as a teenager.
After she reveals to Koh that she's pregnant, he tells her he's married and offers to take care of her, but only as his mistress. Sunja rebukes his offer and instead marries a kind but sick minister named Baek Isak, who vows to embrace Sunja's son as his own. Along with Noa, the two have one child together, a boy named Mozasu.