Actor Im Siwan is drawing attention for his unusual dialogue delivery in tvN's new romantic thriller Love in Disguise, with some viewers questioning his acting style following the drama's premiere.

The series aired its first episode on October 19, introducing Im Siwan as Yoon Yi Joon, a wealthy third-generation heir who becomes a murder suspect.

While the drama attracted attention for its storyline and cast, Im Siwan's noticeably different way of speaking quickly became a topic of discussion among viewers.

According to Korean media reports, some viewers were confused by the actor's delivery of certain lines, saying that his tone sounded different from his previous performances.

One reaction questioned, "Why is Im Siwan speaking like that?"

Some viewers also wondered whether his unusual dialogue delivery was an intentional acting choice or a result of the drama's direction.

Among the reactions were suggestions that there might be an issue with the directing, while others believed the unusual speaking style could have a hidden meaning connected to his character.

However, no official explanation has been provided regarding whether Im Siwan's dialogue delivery was a deliberate creative decision.

In Love in Disguise, Im Siwan plays Yoon Yi Joon, an arrogant but mysterious wealthy heir who finds himself at the center of a murder investigation.

The story follows Kang Jae Hee, a former special forces officer turned detective who disguises herself as a man to work as Yoon Yi Joon's personal secretary.

The first episode introduced the two main characters and established their unusual relationship, setting the stage for the drama's mix of romance, mystery, and suspense.

Despite the discussion surrounding Im Siwan's performance, Love in Disguise recorded a promising start in television ratings.

According to Nielsen Korea, the first episode achieved a nationwide average rating of 5.558% among households subscribed to paid television platforms.

The figure placed the drama above the 5% mark for its premiere, indicating a solid opening in terms of television viewership.

However, the discussion surrounding Im Siwan's acting has become another point of interest as viewers continue to follow the series.

The actor is known for taking on a wide range of roles, and his latest performance has prompted questions about how he intends to portray Yoon Yi Joon throughout the drama.

For now, viewers remain divided over whether the character's unusual speaking style is simply part of his personality or something that will become clearer as the story develops.

With a 5.558% premiere rating and growing discussion about its lead actor, attention is now on how Love in Disguise will develop in its upcoming episodes.