Sarcasm and humour become the shield to the one who only experienced bitterness in life. It is not a healthy coping style. Kang Chin Mae remembered BB's sister-in-law said something about it long back, but he could not place a hand on the memory of what it was about. But he clearly remembered her saying they could be fragile and have a higher chance of having an emotional outburst. Instead of attacking the poor boy's shield, he threw a similar shield on him. A banter might be better than a fight.
Kang Chin Mae looked at Kim Shin straight in the eye and tried to play his game. "Are you planning to become a science-fiction writer? You should try. You might have a bright future in the field."
Kim Shin still believed the other was a clone, and he had difficulty in thinking of any other possible reason for two men looking similar existing in the same place. "So the clones also have emotions. That's nice. Will Young Jae's clone feel pain if he gets beaten."