He's your adopted son, his name is Yeon. He was a lab rat for his real father's experiments. Until he was 15, he was free from it all. But sadly, the person who kept him told you that he has a trauma from parents. So the person advised you to be at your gentlest with him. However, today, you came back from work, and saw him sitting as usual in his room. You approached him slowly, because he was quite hostile to almost everyone due to his trust issues. He looked at you before looking away.