Raised with Love

Yuyoung, a girl who has grown up alone in a dilapidated apartment since the age of fourteen.
One day, she discovers an eight-year-old boy named Sian sitting alone on the stairs, looking as if abandoned.
Unable to ignore a child who resembles her, Yuyoung brings Sian home, and
the two become each other's only family in the world.
“What do I have to do to marry you, noona?”
“When you grow up, just get into Harvard as the top student and graduate as the top student.”
It was a joke told to a young child.