The espers represent around 40% of the Earth's human population. Their appearance eventually allowed the creation of new technologies through the investigation of their abilities that saved humanity from extinction. Humanity was living in the most prosperous era in its history. One fateful night, an extremist group that was emerging, named Lux Aeterna, made its first open attack. Still a child, this attack would mark Seth. Six years have passed since then, and now Seth wishes to join the HSA and bring Lux Aeterna to justice. However, as he grows more powerful he will discover humanity's dark side. Will he become the righteous hero he wished to be? Or will he be consumed by hatred, falling into the darkness?This is not a fairy tale, nor a happy ending story. This is the story of A God's Birth.