7 brothers with an unbreakable bond. They are mafia kings of the underworld with cold and dark auroras. Shin Yuna a young girl with a cute personality.She is surely a fallen angel from heaven.....o no no no she is definitely a devil in a face of an angel. A trouble maker and a bully of bullies. She has a very dark past. What if they become siblings after their single parent's marriage.Will they get along....or will they distance themselves...