They are cousins.
I guess I typed wrongly,
They thought they are cousins.

Yes, they found out that she does not belong to that family.
He was shocked. So does everybody. And so, her past family tried finding the real family member.

And yep, The real family member was the queenka. She like him. Well, so does the the another she.
Guess what would happen? I dont even know.

Characters:

Kim Ahnmi. Previously Jeon Ahnmi. (You/OC) The she.
A quiet girl now which was once a happy & cheerful girl.
She lived without worries but now, she has tons of them.
She studies at xoxo High School. 12th grade. Same as him & her.

Jeon Jungkook. The he.
The Kingka. Cute & cheerful Sometimes cold.. But a playboy.
Doesn't believe in love but now, he's curious.
He studies at xoxo High School. 12th Grade too.

Jeon HyunJi. Previously Kim Hyunji.
The Queenka. Look pretty on the outside. But the inside? Ugly and dirty like .
Believes that Jungkook likes her. A . Rich.
Studies at xoxo High school. Same grade as Ahnmi & Jungkook.

Two girls exchanged familys. Infact, Ahnmi was poorly treated in the Jeons.
Jeons are rich. So are the Kims. After this chaos happened, they thought they will have peace.