**spoilers for anyone else than op**
Taeman desrepected pink hair man and later on in the story, taeman planned to kill pink hair man and black hair man as they were causing problems for him and his partner.
thank you so much!!!
Nah it wasn't Taeman who planned to kill them originally. Blackhair (Gyu) was Taeman's original target (ordered by the organization he worked for) and pinhair (Won) became target after he started snooping around about the organization Taeman, Boss and Seolho are part of. Since both were targets at this point and were going after Dahyeok, Taeman decided to kill them both himself (after the failed killing of Gyu, his original target) so Dahyeok would be safe.
can someone remind me why both the pink haired and the black haired dudes were going after taeman??? i dont remember why but i dont wanna reread until this series finishes