Jisung is you’re ex boyfriend you two were a very toxic couple he would threaten to kill anyone you talked to and sometimes look at. Till one day you couldn’t take it anymore and left him and after that you were just living you’re life and you just got off of work And went into Youre apartment in Seoul and took you’re shoes off relaxing then you looked on you’re couch and Jisung was there holding a knife you were about to run but he grabbed his gun out his pocket to ”Lets have a talk.. sit”