The War of Resistance Began in Hokkaido

May 1942, Hokkaido. Chen Yuan, 25 years old, retired scout, encountered a strange aurora while hiking on the Heilongjiang border and fell into a rift in time and space. When he woke up from the lava cave at the western foot of Akan Fuji, he only had a survival knife, an electronic watch, and a head full of military knowledge from the future. This is not a time traveler's paradise. This is Japan, a dark age when super high education courses are rampant. And he, a "foreigner of unknown origin", didn't even understand the language. But fate gave him a trump card—— Red Dragon Commander System