[1] In mid-1942, an investigation by the provincial police of Kankyōnan-dō led to the discovery of a female Korean high school student's diary.
[2] Consequently in October, police arrested members of the Korean Language Society in Keijō on charges of violating the Peace Preservation Law.
[3][4][2] Following torture, a confession was obtained that the Joseon Language Society was an organization having as its purpose the independence of Korea from Japan.
In particular, the happening at Jeonjin Station, which was the beginning of the incident, was reconstructed to fit the status of the Joseon Language Society.
The 2019 South Korean movie, Mal-Mo-E: The Secret Mission, fictionalises the story of the creation of the first Hangul dictionary and the story of this incident of torture and imprisonment of key members of the Korean Language society, while apparently remaining close to the facts.