An Yu Jin and REI from IVE have joined the show and are placed into two different agencies managed by Jong Kook and Jae Seok. Yu Jin joins Jong Kook's agency, while REI joins Jae Seok's. Each agency then proceeds to select two more trainees. When it comes time to choose their songwriters, one agency collaborates with the renowned EZUZ, while the other ends up using an AI songwriting tool. Stay tuned to find out more.