Synopsis

Demons are systematically attacking Salamanca City, leading to a large-scale demon cleansing operation. During the operation, a demon with unique spatial abilities appears, overwhelming the human warriors despite their enhanced forms. The warriors speculate that the demon's power is linked to a mysterious 'Black Finned King', a high-ranking demon. In the chaos, one warrior is revealed to have developed a fifth fin and a purple core, using a psychic attack to immobilize the enemy.