In the end, Sangwon played the main character of the father, while Hero was his son. Zeno thought Hero was the best at it when they had a mini-audition.
Sangwon, on the other hand, didn't really have a choice but to appoint himself as such because he was the oldest one. Hero was the youngest, and paired together, they had that instant father-son contrast the script needed. Risa, being the oldest woman among them, played as Sangwon's wife.
She resisted at first, but her professionalism prevailed in the end.
They had a kid actor too—someone the staff had arranged to bring in. He looked like he was about to cry the moment he stepped into the set.
His name, according to the clipboard, was Yeon. A wiry little boy, maybe six at best, with huge eyes and a tiny body that looked too small for the oversized shirt he wore. He was only supposed to be there for the first part of the story, playing the child version of Hero's character.
