Almost 100 years ago, humanity witnessed an unprecedented event: a battle between a dragon and a humanoid figure, ending with the death of the dragon whose corpse fell upon the Kyushu region. Its fall triggered the appearance of countless monsters across the world and brought the existence of man...

Naoya Fujimoto had a dream: to succeed as a student and athlete. But life doesn’t always go the way you plan. After years of effort with nothing to show for it, everything he fought for falls apart. Defeated and aimless, Naoya returns home… only to be kidnapped. Or is he? “Wait… am I in a...