In the 21st century, a species known as “Boundary Demons” appears around the world. They possess unparalleled physical abilities as well as all manner of uncanny powers, and they have caused horrific tragedies everywhere they appear. One year after the Boundary Demons emerged, “superhumans” began appearing around the world. They possess the power to fight the Boundary Demons, and their extraordinary lifespans and powerful bodies tell humanity that there is still hope for this world.
“My name is Lei Xiaoyuan. I will kill every Boundary Demon in this world.”
