The Sister of BTS

(No, there's no love stuff here...yet. Only Brotherly love...first.)
Tatianna is a Half-Filipino, Half-Korean. And she personally knows BTS. No, she has no blood relations with any of them. She is just plainly their best friend. She has been with them from day one, just when they started music. She lived in the Philippines, but she would go to Korea to see them perform. She is in high school, finishing high school to be exact. She is 18 years but they treat her like a kid. Bla bla bla ~ (i also own the one on quotev)