Can someone tell me what is the relationship between Taesung and Sooyung's uncle ??!

For now we don’t know much. Certainly Tae is involved in the death of his uncle. Perhaps he was involved in a gang war, Tae was upset by this fact and still goes to the cemetery to find him. But you do not know anything else. Tae is terrified that Soo Young can find out, so much so that he cuts Kang’s tongue out, because he knows what really happened and could tell the boxer. I wonder what’ll happen when he finds out.

Yess I wonder how ... it make me feel anxious while reading this (⊙…⊙ ) anyway min hyuk look sus.. but I'm glad he came right on time