ONF recorded past exam questions and explanations for the Education Ministry and EBS’s Korean-history audio project. Five of ten questions were released August 31, with the rest due September 7. Listening is free on Hamkke School. The recordings explain Korean-history questions from the past five years of national entrance and practice examinations. Members use dialogue and short role-play to explain historical concepts while encouraging a balance between study and rest. Audio is available on the Hamkke School website and app.