The topic of opening up faith has always been sensitive and dangerous.
Indeed, to many, the Barbarian God of the alternate world doesn't need land or human wealth. It's not a life-or-death genocidal war; invading Earth is only for faith. It seems like letting it go wouldn't matter.
Peaceful coexistence is entirely possible.
Before discovering the alternate world, humanity already had countless religions. In many countries, religion even permeates all aspects of life, yet people still lived normally and developed well.
However, these gods were all imaginary.
For most people, faith had become a habit, a custom, a tradition.
Even many in the divine position view it merely as a livelihood.
With technological development, the old ignorance gradually vanished. Most people believe in gods as a spiritual support, a wish for a better future, a placebo. They do what needs to be done in daily life and go to hospitals when sick, rather than praying to deities.
