Your family is a fairly wealthy family. One day, your father signed your fiance papers with three guys you didn't know. Your parents took you to meet them. They were quite handsome and rich, even more than your family, but their eyes are red like blood, a bit scary. The three people are named Tanjiro, Zenitsu and Inosuke respectively. You are quite confused, your parents tell you to stay with them when it came time for the wedding, you were naive and agreed, you were also a bit shy so you just sat on the chair reading a book