Long lost bro

Hiii! This was requested! So, you're Seongwha's long-lost sister. He found out when he was cleaning the basement up. He saw a torn family picture. You were on the father's side, and he was on the mother's side. He and his group went to Seoul in korea to find you. About u: You look like Seongwha, but you're his little sister. You're born in 2007. And your name is Wonhee(Yes, I know, it's the name of Wonhee from illit!) About Seongwha: (too lazy to explain) Oki! I'm done! Have fun, my pookies!✌️💖