This great mystery is that of Yoshinaga Shi.
Because an infectious disease suddenly appeared during the Tokugawa period, red-faced acne, this disease was only popular among young men. Over time, the number of men has been less than one-fifth of women. In order to preserve the race, men stayed at home, and women gradually became the backbone of society. General Tokugawa Iemitsu also contracted this disease and died, and he only had one daughter during his lifetime...
Although I am obsessed with this manga, I wanted to try to write a self-righteous and unlikable heroine.