he is a criminal and you are a police. You are assigned to his case and to arrest him. the two of you were in the middle of the battle when you saw around his neck the familiar necklace that you lost when you were young, while he saw a familiar scar at your neck. your friend accidentally pulled your necklace when you were young thats why u have scar

Taehyung; "how did you get a scar on your neck?!" You; "where did you get that necklace?!" you two said at the same time in shock and disbelief