Yim Si Wan on Love in Disguise: How He Built a Chaebol Heir Who Hides Everything, Even From the Audience

When an actor says his goal was to make viewers unsure whether he is being honest, you know the performance will be worth watching. Yim Si Wan has opened up about how he approached his role in tvN’s Love in Disguise, and his answers hint at a character full of layers, lies and surprising change.

Love in Disguise: Overview

The Setup

Yoon Yi Jun is seen as the strongest contender in his family’s succession battle, until he is suddenly suspected of murder. Into his life steps Kang Jae Hee, a detective who goes undercover as his personal secretary while pretending to be a man. It is a high-stakes game where identity, suspicion and slowly growing feelings all collide.

A Man Full of Secrets

According to Yim Si Wan, Yoon Yi Jun carries many secrets, and he changes a great deal after meeting his new secretary. That is exactly what attracted the actor to the part. The role let him show several different sides of himself, and he believes viewers will enjoy comparing who Yi Jun is at the start with who he becomes once Jae Hee enters his life.

The Acting Approach: Layers, Not Labels

The most interesting part of the interview is how Yim Si Wan built the character. He focused on the fact that Yi Jun rarely reveals what he truly thinks or feels. In his view, a man surrounded by secrets and enemies is almost born to hide his real self as a form of protection.

So he deliberately constructed many layers of emotion. His goal was to create a character whose sincerity is hard to read, someone you can never quite tell is being genuine or presenting falsehoods as truth. That is a tricky balance for any actor, because the performance must stay believable while keeping the audience guessing. It also explains why the teaser felt so slippery: even Yi Jun’s reactions could be sincere or strategic.

Thriller Meets Romance

When asked what makes the drama special, Yim Si Wan pointed to its blend of thriller and romance. He invited viewers to look forward to figuring out what is true and what is a lie when it comes to Yi Jun, and to discovering when and why Jae Hee starts to feel drawn to him as a person.

That is the real hook. A suspect who may be innocent, a detective who should not get close, and a disguise that complicates every emotion. The more she investigates him, the harder it becomes to keep her feelings out of the case.

What to Expect?

If the actor’s preparation is any clue, the drama will reward careful viewing. Small glances, pauses and half-smiles could carry big meaning. Fans who loved the earlier teaser, which showed mutual suspicion between the two leads, can expect that cat-and-mouse tension to grow into something more complicated.

While you wait, you can watch Yim Si Wan in the film Boyhood on Viki. For more K-drama news and interviews, keep reading Technosports and explore our latest entertainment updates.

FAQs

When does Love in Disguise premiere?
The tvN romance thriller premieres on October 19 at 8:50 p.m. KST.

How did Yim Si Wan prepare for his role?
He built many emotional layers for Yoon Yi Jun, making it hard to tell when the character is sincere.