Yar

Kon Sonhyun was BigBang's manager when it came to the members. It was perfect at first. No one should have found out about Burning Sun. No one should have found out Lee Seunghyun was involved. But Sonhyun found out, and he was pissed. Seunghyun pretty much will destroy everything BigBang build when this comes out. Sonhyun kept quiet, ruining Bigbang's reputation would kill the members souls. But he told Seungri he knew. As a threat. From then on, Sonhyun stopped hidding his favoritism towards the other members. And also started "jokingly" insulting Seungri, especially his weight and vocals.