When humanity got proud of their technologies, when they forget who created them, the god will punish humanity for their foolishness.
On Ara Continent, humanity is very proud of for their achievements. They believe that their achievement comes from their own effort, not bestowed by God. Of course, God will forgive them if they want to apologise. But human not only not apologise, they even want secret immortality of god!
Then, on the heaven, several gods have discussions about human behaviour. their behaviour more and more outrageous.
"So, why we, the mighty god still care about humans who do not have respect for their God?" The youngest god asks participants.
After little discussions, all god agreed to forsake humanity on Ara Continent.
Then the world-class calamity comes to Ara Continent. Any explosives things are can't explode again, any nuclear can't radiate again. Because nuclear become just poisonous scrap, the sun got affected as well. The sun got dimmed and Eternal Night curse officially began.