9 parts Ongoing What happens when a summoned Hero turns against his master?
That's what happened in the world of Altaria.
In this medieval world, kingdoms coexist alongside guilds and various races. The ritual of summoning Heroes from the modern world has become a tradition passed down through generations to fight the Demon race destined to bring destruction.
At first, everything went smoothly. The Heroes saved the world, the kingdoms welcomed them, and the ritual continued to repeat itself, as if it were an annual tradition. However, everything turned upside down when some Heroes chose to use their powers not to defeat the Demon King-but to rule the world.
Kingdom after kingdom collapsed under their ferocity. To stop the catastrophe, all the kingdoms formed an alliance to hunt down the rebellious Heroes. From then on, the term "Outsider" was born-a derogatory label for those deemed traitors. Tragically, even Heroes who simply wanted to live in peace were dragged into the fray and exterminated.
The rebellion may have ended, but the resentment and trauma lingered. Anyone who showed even the slightest hint of a different power was immediately suspected... and labeled an Outsider.
Amidst this world of suspicion, a young man from the modern world is reincarnated. His name is Souta Yukimura, now reborn as an ancient, nearly extinct race-the Faceless, faceless beings with bodies of living shadows. With a cursed sword at his side, he is known as Kurogane.
To the world, he is a threat.
To himself, he is simply someone searching for a new meaning in life.
However, when his dark footsteps meet the false light of a Hero revered by the gods, the wheels of fate begin to turn. The world, which has long viewed Outsiders as enemies... is now forced to reassess.
Will Kurogane become the symbol of destruction everyone fears?
Or will the "Outsider" change the world's view of "Outsider" itself forever?
