When an unexpected soul arrives in this ambiguous era, what kind of storm will it stir up? Will it blend into this era and become a paragon of chivalry? Or will it gallop across the battlefield and leave its own legend in the history books? Or will it tear through the darkness and usher in the dawn of light?

Noen said: Only children make choices, I want them all.

A college student who participated in military training traveled through the spy war era

The first thing to do is to survive...

This is a story about catching and killing Japanese spies...

The book is also called "My Intelligence System", "The Man Who Deals with the Devil", "Dancing on the Edge of a Knife", and "My Spy Diary".