Ghost Marriage

I believe that people who frequently surf the Internet must know the picture of the underworld marriage. I was also inspired when I saw it, so I decided to write a horror novel about it. There are roughly three types of underworld marriage: the first is when a man and a woman are unable to get married and die together and be buried together. The second is when a young boy and girl who have not yet married are arranged by their parents to complete an underworld marriage in accordance with the "si