Unholy Brothers

A girl who is known for being good at anything transmigate as the sister of the FL in a r19 novel where the FL becomes the bloodbag of the vampire brothers.

'W-why.....Am i the one sent here instead of my sister?!'

'Don't tell me she's the sacrifice'

i couldn't hold my anger and said 'could you please shut up, it's not like i wanted to be here you motherf*cher'

the whole room turnes silent.