Mafia Stepbrothers

Yn a sweet caring beautiful girl spend her life 8 year in new york suddenly her mom tell her to shifted on her hometown south korea

mom: baby we shifted to Korea today pack your stuff
Yn : ok mom

Mom: yn I have a boyfriend

Yn : whattt !!!

mom : what happened baby you are not happy

yn : no mom ! I am happy for you !! congratulation mom

mom : get ready baby we going to meet my boyfriend

yn : ok mom

mom : yn meet your soon to be step brothers

7 cold hearted merciless dangerous mafia and school biggest bullies BTS

yn : hello I am yn nice to meet you

??? : hello Lil sis

???: stay away from us

?? : welcome to hell lil sis

???: why my hear beat goes fast that time she close to me

what happened BTS and yn become stepbrother and sister

note : that story not contain only sibling relationship between yn and BTS

Please forgive me if there is any mistake then English is not my first language so please forgive
me