Hello, Who Am I?

Seven days ago, he was a trainee police officer who could be bullied by everyone in the colonial docks. Even being equipped with a gun was a luxury. Seven days later, he was a genetic monster who blew away his boss with one punch and exploded bullets with his bare hands! A tube of potion of unknown origin dragged him into a fatal whirlpool. Murderous intentions are everywhere, and everyone in the world is an enemy! Since the world does not follow the law of kings, then I will use my fist to re-establish order! Watch me control violence with madness and purge this world of monsters and monsters!