Ghosts exist in this world. Ghosts are souls, not just human souls, but the souls of all kinds of living things.
Ghosts, along with the few people who have broken through the limits of their own souls, wield a special power: soulforce.
In ancient times, those who wielded the power of souls were known as soul practitioners.
But with the advancement of technology, people today believe that ghosts and supernatural forces do not exist, and that science can explain everything.
Things like will-o'-the-wisps and mirages...
But is that really the truth...
People have gradually forgotten the legendary evil spirits and the Underworld!!!
Then let me restore order to the Underworld!!!
Let me rebuild the Underworld in this age of science!!!
