Not a spoiler since idk but based on my gut feeling, I think the friend is another agent / bad guy pretending to be the kid who Hajun met when he was young. The accident probably affected Candy's memory so the friend is impersonating him to get closer to Hajun who is the "target"
Not a spoiler since idk but based on my gut feeling, I think the friend is another agent / bad guy pretending to be the kid who Hajun met when he was young. The accident probably affected Candy's memory so the friend is impersonating him to get closer to Hajun who is the "target"