You had locked Myung in the closet after having cut his throat, with a collar you tied the closet holding so the body wouldn't fall. Then you went and talked to Da jung, you told him that you wanted to talk to him privately in the room, bok-su go and Da jung entered the room.

Da jung "ya! ten cents because you're here Bok su, I know you're up to something!"

she looked at you nervously and worried