Ok this is my theory : the real son and Minjae used to go to school together, the real son got bullied because he was in love with Minjae and then committed suicide? Minjae was bullied too, the father somehow figured out and decided to take his revenge cause he thinks it was all Minjae's fault. He carefully planned to save Minjae to gain his trust... Well I'm intrigued I want moooooore!!!
that actually does make sense probably because they found out of their relationship and the real son couldnt take it anymore. but damn rafbateman you got that on point(⊙…⊙ )
Ok this is my theory : the real son and Minjae used to go to school together, the real son got bullied because he was in love with Minjae and then committed suicide? Minjae was bullied too, the father somehow figured out and decided to take his revenge cause he thinks it was all Minjae's fault. He carefully planned to save Minjae to gain his trust... Well I'm intrigued I want moooooore!!!