Blood Soul Pursuit Order.
In the entire Three Islands of Japan, it hadn't appeared for hundreds of years.
Hundreds of years ago, there was a demon who had a grudge for stealing someone's wife. As a result, the man whose wife was taken, at the cost of becoming a lifelong slave, triggered the Blood Soul Pursuit Order.
That demon was hunted by thousands, with nowhere to escape, eventually being cut into pieces by ten thousand blades, while the one who issued the order spent his entire life as someone else's slave.
Perhaps, the one receiving the order wasn't aiming for the reward on the Blood Soul Pursuit Order but simply wanted to kick someone when they're down, just for the thrill.
Thus, upon seeing the Blood Soul Pursuit Order reappear in the Human World after hundreds of years, all the demon cultivators became very interested.
