Revenge System: Reborn into the Defense of Nanjing

Any Books About Someone from China Transmigrating to the War of Resistance Era and Beating up the Japanese Invaders?

Anti-Japanese War Stories About Someone Who Goes It Alone and Joins No Organization

Are there any stories set during wartime where one person fights the Japanese invaders alone, keeps to themselves, and never joins any organization?

Any Books About a Modern Army Transmigrating to the War of Resistance Era?

Any books about the modern military transmigrating to the War of Resistance era?