Ultimate God Of Death

He was absolutely not the world's most powerful mercenary, but he was undoubtedly the most annoying one — a man who can never die！ Because of a genetic modification, he obtained an almost immortal constitution. Somehow, in addition to relying on killing people to make money, he also became the world's happiest “HERO”... As the mercenary with a cheap mouth, the immortal who could not be killed was also called as "the god of death". And this is his his adventures !