Anti-Japanese War System: The Hidden Butterfly's Flower

Zhong Yuyan was bound to an Anti-Japanese War System and reincarnated into a parallel timeline. She never expected that she had been reborn into the body of a female traitor who had been assassinated by the Military Statistics Bureau. After barely managing to save her life, she learned from the original owner's memories that this woman was no traitor at all. She was a triple agent who had returned from studying abroad, and also the most secretive butterfly hidden deep within the enemy's ranks by our Party: the Hidden Butterfly! Now, an ordinary girl who came from the modern age through transmigration, she relies on the system to forge her own legend in this turbulent era as the winds of change sweep across the land. — Description from novelcodex.orgFull novel: Anti-Japanese War System: The Hidden Butterfly's Flower — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠