A lighthearted interview between two South Korean stars Byeon Woo Seok and IU has sparked widespread online discussion after an unexpected remark during a promotional appearance for their ongoing drama.

Byeon Woo Seok and IU starred together in an episode of YouTube's ELLE Korea channel where they exhibited their good screen chemistry in promotion of their latest K-drama, "Perfect Crown."

According to Koreaboo, the interaction began with IU complimenting her co-star in a playful tone during the interview segment.

As reported by the outlet the conversation shifted when Byeon Woo Seok was asked to describe IU's strengths. "She is really really sexy. She is really, really pretty. She is really, really cute," said the actor.

The remark immediately drew attention on set and online, as IU is publicly known to be in a relationship with actor Lee Jong Suk since 2022. The actress responded in a lighthearted manner to the unexpected comment.

The moment continued as Byeon Woo Seok clarified his intentions following her response. He meant it "deeply and seriously," which only made the moment stand out more.

Coverage from MHN Sport highlighted how the comment added to the buzz surrounding the pair, especially given IU's public relationship status.

A headline cited by the outlet emphasized the surprising nature of the moment. "Byun Woo Seok Bluntly Tells IU, Who Is Publicly Dating, 'You are really, really sexy,' Causing A Stir On Set."

Despite initial shock, much of the public response leaned toward amusement, with viewers focusing on the pair's dynamic rather than controversy.

Online users shared their reactions following the release of the clip. "They both just start giggling whenever they talk, it's so cute." Additional comments reflected a similar sentiment about their chemistry. "Looks like IU and Byun Woo Seok have gotten really close lol. They're both so kind and cute, their chemistry fits perfectly."

Other viewers highlighted the playful nature of the interaction. "This is so ridiculous, they just laugh whenever they're asked anything lol," one netizen wrote. Some responses emphasized the light tone of the interview. "Why are Byun Woo Seok and IU so harmless and cute?," a netizen asked.

Another viewer pointed out the pair's relaxed dynamic, saying, "They're at the point where they just laugh even if a leaf falls lol. How fun was filming... I want to hear more behind-the-scenes stories. Why is this so entertaining?"

The renewed attention comes after the co-stars had previously faced criticism ahead of their drama's release, making the positive reception to their chemistry notable.