Cold Mafia Brother (Taehyung FF)

Kim Y/N . The only sister of the world's biggest mafia Kim Taehyung . Taehyung promised his parents that he will never involve Y/N in his matters . She is exhausted with the cage . When Taehyung decided not to be strict towards her , her cousin brother Jungkook enters and Jungkook wants Y/N to live with him . What wil...