Seol In Ah is returning to the small screen with ‘Love in Disguise’, an upcoming tvN drama that combines romance, mystery and workplace intrigue. The series marks her first on-screen collaboration with Im Siwan. The upcoming K-drama is scheduled to premiere in South Korea on October 19, 2026. It will air every Monday and Tuesday on tvN. ‘Love in Disguise’ also features Kim Jung Hyun and Yeonwoo in important roles. The series is based on the Kakao Page web novel and webtoon ‘Why You Don’t Know It’s a Girl?’ by Lee A-yeon and Ryu Do-ha.
What is ‘Love in Disguise’ about?
‘Love in Disguise’ follows Yoon Yijun, played by Im Siwan, who belongs to the powerful Taegang Group family. His privileged lifestyle changes after he becomes the prime suspect in a murder case connected to his company. Yoon Yijun has the looks, intelligence and social standing expected from an heir. However, his personality creates problems at work. His extreme sensitivity and perfectionism make him a difficult boss, causing employees to leave. The murder investigation further isolates him. As he withdraws from those around him, Yoon Yijun eventually hires a new personal secretary.
Seol In Ah plays an undercover investigator
Seol In Ah portrays Kang Jaehee, a former special forces officer with strong combat skills. She enters Yoon Yijun’s life with a secret mission. Kang Jaehee disguises herself as a man and becomes Yoon Yijun’s personal secretary. Her real purpose is to investigate the murder and determine whether the corporate heir is responsible. Her assignment becomes increasingly complicated as she spends more time with her suspicious boss. She must maintain her disguise while handling Yoon Yijun’s unpredictable behavior and continuing her investigation.
Romance develops amid a murder mystery
The relationship between Yoon Yijun and Kang Jaehee gradually changes as they spend more time together. Their initial connection is based on an investigation involving a murder suspect and an undercover officer. However, their workplace relationship introduces another layer to their dynamic. Yoon Yijun sees Jaehee as his secretary, while she continues hiding her real identity. As they become more familiar with each other, unexpected sides of their personalities emerge. Their relationship begins to blur the boundaries between romance and bromance. The drama therefore combines an undercover mission with workplace tension and romantic developments. Their changing equation also forms part of the psychological conflict within the story.
Kim Jung Hyun and Yeonwoo’s characters
Kim Jung Hyun plays Kim Sihyun, an attorney working for Taegang Group’s legal team. He is also Yoon Yijun’s best friend and has a close connection to the heir. Yeonwoo portrays Lee Hyejung, the secretary of the chairman of Taegang Group. Her character adds another layer to the corporate setting surrounding Yoon Yijun. The production team previously highlighted the unusual character relationships during the script reading. According to Soompi, the drama brings together a third-generation chaebol and a female investigator who operates under a male identity.
‘Love in Disguise’ release date and streaming details
‘Love in Disguise’, , is adapted from Lee A-yeon and Ryu Do-ha’s Kakao Page web novel and webtoon ‘Why You Don’t Know It’s a Girl?’. The South Korean workplace romantic comedy will premiere on tvN on October 19, 2026. Episodes will be released every Monday and Tuesday at 8:50 pm KST. For viewers in India, ‘Love in Disguise’ will be available on Amazon Prime Video, according to GQ India reports.
