
so, i found out about major kwak's past; his parents used to be a researchers, had a younger brother and a sister (not sure whether he has a brother and a sister or two brothers), and they eventually became an adam, major kwak was the one who killed them. after the incident there's a man look for him, when he found out about major kwak's parents, he took him to the rainbow city for major kwak to become a soldier, but then the man was shot to death. they took major kwak in, and later he killed the soldier who killed the man (who look after him), more like he tortured to soldier.
the creators sure deserves to rest, but man