This story is about a cold, savage yet mature girl who lives with her mother. She loves her mother so much but what if her mother found a lover after years of suffering?? How will she react when she found out that she's gonna get a stepdad?? What will she do when she found out that she's gonna get not only 1 stepbrother BUT 7 STEPBROTHER??!!! Y/n is a cold girl but there is mystery behind her cold self . Bts is a group of bad boy that known as the devil on the underground world. Will BTS know about the mystery of that girl?? Will she know the truth about her stepbrother?? READ TO KNOW THERE WILL BE ONLY SIBLINGS RELATIONSHIP BETWEEN Y/N AND BTS