Going Undercover

Kim Y/N is a normal student who goes to college with her friends Wonho and Rose. One day her brother Kim Namjoon comes back home and bring his friend Kim Seokjin as well who Y/N has a huge crush on. One day Y/N receives a mysterious note in her locker and it gets her involved in dangerous situations and she seems to give more than she can bargain for? Read to find out.