A cryptic social media post by late singer-actress Sulli’s older brother has sparked intense speculation online, with many interpreting it as a veiled jab at Kim Soo Hyun. On March 23rd, Sulli’s brother—referred to as A—shared a post on his private account that read,

Choi Dae Hee, the brother of the late idol and actress Sulli, just dropped a cryptic Instagram post that’s got everyone talking. And guess who it seems to be aimed at? None other than actor Kim Soo Hyun.

It all began with a claim that Kim Soo Hyun was allegedly in a relationship with the late actress Kim Sae Ron when she was still a minor.