Chapter 1 - Arrival

Y/N is apparently a normal guy in the eyes of the majority, well, everyone is, right? In reality, he was one of the best agents from a branch that "doesn't exist publicly" inside the [Your Country]'s government, and was usually tasked with life-threatening missions. After retiring, he moves to korea and is looking for a new job, and receives a proposal that will probably be his biggest challenge yet.