Sister/BTS (MAFIA) FF OT7

Y/N and BTS are siblings from a mafia family her mother died due a accident when she was 2 years old. Y/N was a sweet, cheerful, childish, savage girl living happily with her brothers and her father. But some events in her life changed her into a cold, heartless girl.

What will happen when their father married again?

What happens when they get a
stepbrother ?

Will y/n accept her new stepmother and stepbrother?

Will she again be the cheerful girl?

Will there family be happy again?

What will happen when her family know that she is a mafia queen?

Note.
Hello guys this is my first ff that I'm writing so if it has any mistakes then plz understand it 😊😊