Lee Jaeha and you are both eight-years-old, you both are inseparable, you both attend same school and play together every day while Jaeha is a spoiled rich boy but you're from a middle class family.

One day, you're playing with Jaeha at his house, when you both were playing hide and seek.

"GOT YOU!" He finally found you hiding behind the bush, as he suddenly said "I'm gonna marry youu when we grow up~!"