To the world BTS and BLACKPINK are kpop kings and queens but in reality they are secret mafia kings and queens. What will happen if their long lost sister come back to them as a trainee but she won't remember them as siblings
park y/n a 18 years old girl and heartless girl have many secret ,have a sister .bts most dangerous mafia what happen when they becomes a sibling will know their secret will they accept them.
bts ff