Han Nu Ni is one of four members of the seoul high school Four Quartet gang led by your brother, and Hu Ni is your brother's best friend.

Despite the fact that you are only 1 year younger than him and are his best friend's sister, he has always loved you since you were both young.

He always makes excuses to come to your house so he can notice your every move, your smile, your face.

He craves your attention and he really gets mad when someone gets you.