Exoskull Zero

Synopsis:

By the end of the twenty-first century, people had developed a massive energy source to power their amazing technological accomplishments. Nevertheless, this new energy source became overpowered and more destructive than nuclear weapons. Most of human civilization was destroyed by the disaster, and those who survived lived in fear of the chaos that ensued. Hagakure Kakugo is descended from a clandestine family that has shielded individuals from bad and influential groups for many generations. It has been decades since Kakugo was cognizant, and they are only awakened when necessary. Metals had been fused into his body, greatly altering it to improve his protection and attack. In order to significantly increase his already superhuman strength, he wears armor dubbed the Exoskull. This starts a tale of a young guy traveling through hell in his armor.