Espionage: Red Luan Returns to the Fold

In 2024, medical master's student Chen Jiehua is studying in Japan when his soul unexpectedly travels back to 1924, into the body of a Chinese cadet at the Imperial Japanese Army Academy. After accidentally killing his Japanese classmate Aoki Seigen, he uses the help of a system to assume Aoki's identity, complete three years of military training, and build connections among Japan's future military elite. Returning to China under the alias Aoki Qiao and infiltrating the Kwantung Army, Chen Jiehua searches for the Party organization, becomes an undercover agent codenamed Red Luan, and risks everything to deliver intelligence and vital supplies for the resistance.