After humanity achieved the materialization of souls, it broke free from the limits of a short lifespan and finally entered the space age. The Heroic Spirits were also liberated from their original texts and became the stars of the space age.
This era came to be known as the Age of Azure Radiance.
Professor Tokiomi, a space archaeologist, discovered Ishtar, transformed from half of the divine core of the Primordial Goddess, among ancient ruins on Venus dating back billions of years. He also found a baby boy sealed inside a coffin, fast asleep.
The professor decided to adopt Ishtar and the boy.
And so, the story began...