추공 (Chugong)
In this chapter he was speaking like it would inconvenience him to do 19 C-rank dungeons. At this point in time he is E-rank and nobody invites him to dungeons unless he gets lucky once or twice a month. How would helping Yu Jin-Ho affect that so called schedule? In fact it's Yu Jin-Ho who is helping to accelerate his growth. By the end of this he will probably be around A-rank and by then with some instance dungeons or some luck and he'd reach S-rank. By then he could just force the them to give him dungeons to solo. Like I said if it weren't for Yu Jin-Ho coming to request his help his growth would take far longer since he does so few dungeons and their monsters are so weak which means very little exp, plus he still has to hide his abilities so he can't monopolize all the exp for himself. Of course mc is an idiot and can't think ahead so he wouldn't realize that he's lucky to get this opportunity