South Korean actor Nam Yoon Su suddenly became a hot topic after a recent post caused controversy on his Instagram account.

The post, which reportedly appeared briefly on Nam's feed, originated from an adult-themed account and quickly went viral after being captured and shared on an online community forum.

The forum post attracted over 70,000 views as users questioned whether the repost was intentional.

Nam, 26, addressed the issue on Instagram, stating that the post was uploaded without his knowledge.

"Hello, this is actor Nam Yoon Su," he wrote. "I just realized that an unpleasant post was reposted from my account without me noticing. I'm very upset that it caused discomfort to so many people, and I sincerely apologize. I'll be more careful moving forward."

His agency released an official statement defending the actor, attributing the repost to an accidental phone mishap.

"This happened while his phone was in his pocket," the agency said. "If he had pressed it while looking at it, he would have apologized, but it seems that he accidentally pressed it while his phone was in his pocket. Nam Yoon Su and the company found out about it through fan reports, and the post was deleted not long after it was reposted."

The explanation did little to quell speculation online, with some questioning how such content appeared on the actor's account in the first place.

Others were more sympathetic, suggesting the repost was likely unintentional and criticizing the backlash.

"He'll probably be more careful from now on," one user commented on TheQoo, a popular Korean forum. Another added, "Yeah, it was a mistake.

Like, do you really think he reposted that on purpose? I get weird stuff from the algorithm too, can't blame him for that."

This marks the third time Nam has addressed an online issue publicly, though it remains unclear whether further action will be taken.

His name continues to trend across social media platforms as the debate unfolds.

Nam Yoon Su is best known for his roles in television dramas such as Beyond Evil and Extracurricular."