During the awakening ceremony at the age of eighteen, he was tested as double zero.
He has no blood and no superpowers. Everyone says that he can only be an ordinary person in this life.
No one knows that he has been devouring all energy since birth. Light, heat, electricity, wind, attack, but this energy has been sleeping in his body for eighteen years.
On the day when the critical point was reached, he walked into the underground boxing ring of the black ring and named himself "Zero".
Others have to practice their moves when punching, but he only has one punch. Others will fall when they are injured, but the more he fights, the stronger he becomes.
