Ban-ryu is the son of the highest official of Silla. His family lost their status and wealth because his father went against the King.

You’ve liked him since you two were children. However, your mother was the daughter a servant which meant she was a servant at Ban-ryu’s house.

Now, she works as an assistant physician and you live in a modest house.

You bumped into Ban-ryu in the market while carrying medicine, not focusing on where you were going.