In the underworld of the far north, there is a demon pool. Thousands of demons are flourishing in the pool. The demons come to the world and are divided into their own factions. In order to maintain the order of humans and demons, a new industry of killing spirits has emerged in the world. Unexpectedly, Ye Shangqiu just went to the Demon Pond for a while, but his soul fell into the Demon Pond...
