Your sister was a popular girl who had lots of friends in school. You were her younger brother by just two years. There was a new student in the class, and you were the one who was chosen and had to tutor her after school. That's why you came home late from school.

(At home.)

Once you got home, you went to your room. You noticed your sister, Vivi, and seven others (her friends.) You looked a little shock, till you heard your sister speak up.

Vivi:"Hey, little bro! Why were you late home?"

You also notice Vivi and her friends sitting on your bed.