Kim Y/n - Works as a employee in a supermarket. Also works as a part time nurse at a hospital. Lost her parents and was with her relatives, but later was in an orphan. Doesn't have any siblings. Grew up alone. Has a best friend, Hoseok.
Jeon Jungkook - South Korea's largest Mafia's only son. The next mafia leader. Leader of the Bulletproof Boy Scouts gang (All the other members are also part of this gang). Falls in love with Y/n.
Jung Hoseok - Y/n's only best friend. Works in the supermarket with Y/n. He too is a mafia leader but Y/n doesn't know it. Jungkook's assistant. Moreover a friend and a brother to him than assistant.
Kim Namjoon - Jungkook's father's personal assistant. If JK's father does something illegal or wrong, he informs it to JK immediately.
Kim Seok Jin - The eldest of all. Also took care of Jungkook during his childhood. A mafia. Sometimes cooks for the guys.
Min Yoongi - A mafia who doesn't think a lot before shooting anyone. Serious when it comes to work but fun when not at work. Doesn't talk a lot.
Park Jimin and Kim Taehyung - Jungkook's close friends. Grew up with him. They both always argue when they get time but become really serious when it comes to work just like Yoongi. Become friends with Y/n.
To be continued....