It is revealed that Oh-sung gaslighted Jae-beom, leading him to believe Won-seok was responsible for his past trauma. In reality, Oh-sung was the one who had pushed Jae-beom off a building previously.
The episode heavily implies what is confirmed in the finale: Jae-beom was the one who physically pushed Won-seok to his death, though he did so while under Oh-sung's psychological manipulation. "Revenge of Others" Episode #1.11
Watch these recaps and highlights to see the emotional reunions and the moment Jae-beom’s memories return: It is revealed that Oh-sung gaslighted Jae-beom, leading