maam its on sale

jin-hong, who started working part-time at a mart, experiences a strange happening on his first day of work with his co-worker, "jin-kyung." since then, jin-hong, who keeps thinking about the day, keeps making mistakes and jin-kyung, who sees it, calls him to her house we need to be quiet so that my baby doesn't wake up but i can't stand it anymore, jin-hong."