A modern mercenary who is obsessed with collecting weapons travels back to 1938. The protagonist has a universal craftsman system that can produce weapons and ammunition according to the era. The output is determined by the raw materials provided.
The protagonist participated in the Anti-Japanese War under the leadership of the 129th Division and led a group of guerrillas to use the system to launch a different battle with the Japanese devils.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.