Jun, the grim reaper who manages death, receives a list of names and descends to the human world again today. School, unfamiliar scenery, and a strange self. But the task seemed simple: he simply needed to find the target of the code floating above his head. But the code written on the register hovered over two people simultaneously. One was Hyeon, with his indifferent gaze, the other Yun, with his playful smile. The question, "Who should die?" soon morphed into "Who should live?" and Jun, hiding his identity, began living as a student alongside the two.