What really has everyone talking is a series of mysterious social media posts put up by the brother of the late actress Sulli that have reopened old wounds regarding the actor Kim Soo Hyun, whose dating controversy alone has led to multiple escalating scandals over the weeks.

However, on March 26, Choi Geon Hee, Sulli's brother, uploaded a black screen image on Instagram with the caption "Sadist."

Though he gave no context, within minutes of the post, the Korean internet speculated that it was aimed at Kim Soo Hyun, who has been at the center of a controversy over his alleged romantic involvement with the late actress Kim Sae Ron when she was a minor.

Kim, 36, is among South Korea's most recognized actors, with roles in numerous dramas, including My Love from the Star and It's Okay Not to Be Okay. But that isn't the only reason his name has been trending.

Netizens are looking back at his 2017 film Real, which Sulli starred in and was directed by his relation — Lee Sa Rang.

The film, which included Sulli's first nude scene, received a bad reception, and an uncensored version of the scene was leaked online soon after the film's release.

Choi also posted a message last week that seemed to be addressed to Kim, writing, "Kim-ssi, I have so much to say, but I can't. You're going to flop from your high perch, so you better grip tight."

This message, combined with others alluding to Real and Kim's fanbase, has led to speculation about what they were referring to.

Social media users were adamant about Choi's recent post, with some saying, "No mercy. LOL🔥🔥" and "Answer me long ago the time of divine punishment is coming. Others voiced dismay, one writing, "What is this? Is it okay?"

Real's controversy resurfaces as Kim continues to be embroiled in a scandal involving Kim Sae Ron.

Kim Soo Hyun and Kim Sae Ron are said to have been in a relationship for more than five years, starting when she was a minor, according to recent reports.

Separately, leaked messages allegedly written by Kim Soo Hyun to Kim Sae Ron have ignited further debate online.

As allegations and past controversies continue to resurface, Kim Soo Hyun and his agency have yet to provide additional statements

As rumors grow, so too do those in the industry with bated breath to see if Kim will chime in on the controversy.

About Sulli

Sulli was the stage name of Choi Jin Ri, a one-time member of the K-pop group f(x).

She moved into acting and was known for her outspoken personality and activism on social issues.

She died in 2019, and her death was ruled a suicide, prompting conversations about cyberbullying and mental health in South Korea.