[Jungkook] Mr. Grim Reaper, I can't die yet!

Why is there a strange man in the house of a single woman living alone? The strange man says: "...Can you see me?" The story of the cohabitation between the woman and the grim reaper, Jeong-guk, who keeps complaining that it's not time for her to die yet. It's too bad I'm dying... I didn't even make it to my twenties...