In the year 393 of the Golden Calendar, six generations of demon kings massacred the city-state of Yas.
In the year 413 of the Wooden Calendar, six generations of brave men fought to the death with the Sixth Generation Demon King in the city-state of Peter, killing the Sixth Generation Demon King at the cost of their lives, and both reincarnated.
In the year 425 of the wooden calendar, seven generations of demon kings and seven generations of brave men met.
The reincarnation of fate once again comes to this island, and the bad luck of the previous life befalls the boy. The partners who used to work hand in hand are facing each other with swords.
If you insist on facing the world, you say you want to be the enemy of the world. Then I will turn my back on you and betray the whole world.
Ps: The copywriting is serious, but the author said that the actual text is just a joke.