Countless races with unfathomable origins inhabit a thriving metropolis, but their success and survival are intertwined with the human society's respect and trust in them.
However, as humanity's belief in these entities dwindles, their power and numbers also decline. To avoid being hunted or forced into hiding, some ancient and influential beings must conceal their true nature or pretend to be human.
On the flip side, certain races with nefarious intentions belong to the "Devil Hunter Association," while many others strive to seamlessly blend into human society to evade demon hunters and persecution.