Koorea Cup Draw.
I'm not sure when it was released, but u/important_Housing451 let me know the draw for the Korea Cup is out.
8 teams from the Amateur K5 league will have a pre-round, and the 4 winners will then be entered in Round 1 proper. Some of the usual suspects are present, such as Seoul Yangcheon TNT, Incheon Seogot, and Yangsan United. Interestingly, Gimhae Jemix is not there this year. They are giants in the K5 world.
It seems the competition will follow the normal procedure, with teams matched randomly, and in the initial rounds, lower-league teams are given home-field advantage.