I Became Famous All over the World by Working as a Bodyguard.

"The former rifle genius turned into a young butcher. He should have been sentenced to death. Fortunately, he was favored by the mysterious army and joined the Nirvana Plan. After ten years of war, he regained his freedom and developed superb martial arts. After sweeping through all the military regions, the Queen returned to her hometown. Under the supervision of the pretty policewoman, she restarted her ancestral bodyguard journey. She protected the beauty all the way and became famous all over the world as a "god-level bodyguard"!"