There are creatures called "Banqi" in the world, and the word "Qi" in "Banqi" is the "Qi" in "Qili". Qi - that is, the fighting ability is very good, and the appearance is more beautiful than humans. It is said that Banqi got its name from this. Although similar to humans, they are different from humans. In some eras, they were regarded as "messengers of God" and highly respected, but it seems that in some eras, they were also called "devils" or "monsters" and were despised. In order to protect such people from discrimination and persecution and to coexist with humans, a city was born.
This is a city surrounded by towering walls and with strict restrictions on human access. It is called Grasheim, the world of joy.