After doing a quick second read-through I want to revise a point I made in the summary I wrote (you can see it in my profile) —
It turns out this 'President Joo' is actually President Zhou. As in Zhou Yu Long (I think that's his first name?) who is Taeseung's biggest rival and has just recently came back to Korea. I totally forgot that the pronunciation of 'Zhou' in Korean is 'Joo' so that's why I thought this was a completely different character that was being talked about.
So YES, Minhyuk is confirmed to be the mole. He was talking to Zhou Yu Long at the end of the chapter confirming that he has Mayor Kim (who's allied to TS) under control.
After doing a quick second read-through I want to revise a point I made in the summary I wrote (you can see it in my profile) —
It turns out this 'President Joo' is actually President Zhou. As in Zhou Yu Long (I think that's his first name?) who is Taeseung's biggest rival and has just recently came back to Korea. I totally forgot that the pronunciation of 'Zhou' in Korean is 'Joo' so that's why I thought this was a completely different character that was being talked about.
So YES, Minhyuk is confirmed to be the mole. He was talking to Zhou Yu Long at the end of the chapter confirming that he has Mayor Kim (who's allied to TS) under control.