Spirits and Goblins / Mouryou no Nie

About a century ago, people fought terrible monsters and demons, and the war was bloody. Having barely overcome the hordes of monsters, they sealed their remains in the depths of a mountain, but from time to time some of them can still be found on the surface. Hayato, Chihiro, and Suzu capture and seal hidden monsters. Soon the century-old seal will weaken, and our warriors must save the world from invasion...