The contract.

Y/N is a true army and loves BTS. But she was mistook as one of those irritating Saseang Fans. Bighit gives her a deal that she can be a part of BTS's life by signing a slave contract under the company. Y/N unaware of the whole situation signs the contract. Here comes the twist, the contract clearly mentioned that during this period her life will be completely dictated by Jeon Jungkook the youngest member of BTS. In the end Jungkook and other BTS members will find out Y/N is an army and not a saseang.