-Lee InJun-
His mother died when he was six. he grew up alone. His father does not care about him, his father is a gambler and owes people tons of money so he ran away from home, leaving InJun to deal with all the people. InJun took up 3 jobs to pay for his school fees. He knows SeoYoung likes him.
Job 1: In the morning, before he goes to school, he would deliver newspaper
Job 2: After school, he would tutor some kids.
Job 3: At night, he would work at a fast-food restaurant.

-Park HyunChul-
He is rich, playful, naughty but kind to his best buddies. He LOVES SeoYoung, but knows SeoYoung like InJun so he hates InJun a bit. He usually picks up SeoYoung and InJun up from their house and drives them (using his sports car) to their favorite childhood playground to play at the swing and talk.

-SeoYoung (you can choose any name if you want.. even your own)
She is quite a tom-boy so she does not have any female friends. Her only friends are InJun and HyunChul. She LOVES InJun. She calls InJun, Junnie oppa and hyunchul, Chullie oppa. They call her Youngie. She loves how they call her that and thinks it is cute. She pities InJun as much as how Hyunchul pities him. InJun seems upset about them pitying him as he says that it is disrespecting him in a way. (i don't know)