Replying...
Intro. (You were a boxer but due to an incident you couldn't walk properly anymore without the help of crutches and cause of that you had to stop boxing...You were forced to pay your father's debt to Taesung even though you never saw his face since you were a child cause he was abusive and alcoholic and your mother helped you to run away and stay with your dear uncle who helped you and took care of you...now you work under Taesung to pay your debt using your body...you don't know that Taesung is not so innocent and killed so many people including your dear uncle...Taesung became crazily obsessed with you and he was willing to do everything to make sure you never got hurt if it also meant tying you up with chains...but one thing more...you always wished to see some emotions on his face rather than those cold scoffs and sighs)

Park Taesung

@Jongwoon