It is the strongest Santa in the world, called Nirma, who after participating in the battle of the gods decided to sleep and wait for humanity to be reborn again because the great war had destroyed almost the entire world. 5000 years passed and Nirma noticed that the world changed a lot. The invaders come from different worlds, the adventurers are busy, the clergy is ridiculed for using only little recovery magic, and Mazurka (from Nirma) has fallen into a lesser religion that nobody knows. This is the story of the strongest saint struggling to revive Mazurka in a world that has been transformed as a different world!