This is a setting that perfectly combines "role playing" and "anti-war espionage". As the most hidden multi-faceted spy, the protagonist does not passively defend in the intelligence war, but actively enters the enemy camp, uses a "simulator" to constantly change masks, and repeatedly jumps between various Japanese troops, creating conflicts, blaming friendly forces, and leaking false intelligence. The entire anti-Japanese war battlefield has become his RPG game, each disguised officer is an archive, and every switch is a life-and-death gamble.
