If You Are Asked to Be a Detective, You Draw Your Sword and Slice Through the Missile?

As a private investigator in Hell's Kitchen, Grayson's biggest worry is next month's rent. Until one day, monsters from the Arad continent invaded Marvel. His DNF system that had been pretending to be dead for a year was finally alive! Others defeated monsters and narrowly escaped death, but he defeated monsters and touched corpses to explode gold coins. While others were running for their lives in the face of unknown creatures, his eyes shone brightly and he could only see walking experience packets. S. H. I. E. L. D. Sends agents to follow him every day, trying to analyze his marksmanship that does not conform to common sense of physics. The military colonel was furious and wanted to confiscate his rusty revolver. Grayson didn't care. He wears a retro windbreaker, lives in a sea-view villa in Malibu, and earns an annual salary of 10 million from the richest man. He lives a boring life of eating, drinking and hunting monsters and making money every day. Until one day, the Chitauri army passed through the wormhole. Grayson sighed and silently put on a long sword full of rust. "Since you insist on giving away experience..." "Then let me show you what the ultimate ghost swordsmanship is!"