
No. The priest really likes him (Taesik) for his dark side. And he wanted to be with Taesik because Taesik doesn't mind his dark side. So to speak. And he did force Taesik to pull the trigger. I wanna say Taesik pulled the trigger but I would have to go back to check. The thing is, if he didn't make Taesik shoot him, inspector Choi would have shot him anyways, so he'd rather be shot by the one he loves. And no, I don't think that psychopath would ever kill the prosecutor. Because he's found someone who accepts him for who he is. They both have a dark side and the prosecutor owns up to it. And that's why the priest also shares his dark side. Don't forget he observed him for more than a year before he decided to pursue him. If his brother (MinSik) hadn't been such a coward (when it comes to actually unaliving his brother and throwing up after having viewed the corpse) it would have been the prosecutor whose head would have been lying in the fridge. But while doing investigation on TaeSik he found that he really likes Taesik for his sadistic side. That's his goal was to reveal his dark side. Ofc if the prosecutor doesn't accept it....he'd be gone too.
Wait, did the prosecutor kill himself to follow that garbage murderer?