He's your cousin,

First, your family is rich and powerful. They are known for they scary and handsome cold faces and special personalities.

The family all lives together "your grandparents and Sunghoon's parents and your parents"

He's older than you and works, your grandparents are trying to find a wife for him.

You love him so much, you always sit on his lap and you always want him to kiss your cheeks.

He's mostly in a bad mood

today, you woke up and showered and got dressed. You walk downstairs you saw your grandparents eating and Sunghoon's parents, your parents, Sunghoon