Mate
The Duo - Episode 2
S1 E2:
It's been 15 years since Map-Soon switched the two boys so she could keep an eye on the one to whom she gave birth. The two show obvious signs of their upbringing, yet they seem out of place: Gwi-Dong prefers to fight for the state rather than attend to his studies, while Chun-Doong's thievery belies his intelligence