The story takes place in the Laoyeling area of a mountainous area in Northeast China. During Japan's invasion of China, a chemical arsenal was built here. In order to protect the chemical weapons depot, Japanese military officer Yasuda massacred the entire Kaoshan Tun. Several children, including Kohiko, managed to escape the line and joined the Anti Japanese Alliance. Afterwards, these children searched for Japanese soldiers multiple times
The story takes place in the Laoyeling area of a mountainous area in Northeast China. During Japan's invasion of China, a chemical arsenal was built here. In order to protect the chemical weapons depot, Japanese military officer Yasuda massacred the entire Kaoshan Tun. Several children, including Kohiko, managed to escape the line and joined the Anti Japanese Alliance. Afterwards, these children searched for Japanese soldiers multiple times