Stray Kids member I.N has released his first solo drama soundtrack, lending his voice to “Guilty Pleasure,” the fourth original soundtrack (OST) track for tvN’s Monday-Tuesday drama “My Guilty Human.” The song was released on November 2 at 6 p.m. KST, according to Korean outlet Dispatch, making I.N the latest vocalist to join the drama’s soundtrack lineup.
“Guilty Pleasure” is a pop rock track built around a bright, upbeat rhythm and a refreshing band sound, Dispatch reported. I.N carries the song with a clear vocal performance, and the track pairs the flutter of new feelings with the hesitation of holding something back. At its core, the song gives shape to a secret, hard-to-confess emotion and the sincere affection underneath it, a mood that mirrors the drama’s own push-and-pull romance.
The release marks a personal milestone for I.N. Dispatch described the track as his first solo OST since his debut, a notable step for a singer best known as a member of Stray Kids, the JYP Entertainment boy group whose music is typically built around the group’s full lineup. Taking on a drama OST on his own puts the focus squarely on his voice, and the pop rock arrangement gives him room to show a lighter, more melodic side than the group’s harder-edged title tracks usually allow.
“My Guilty Human” is a close-quarters thriller romance that pairs an arrogant third-generation chaebol heir with a detective working undercover. Im Si-wan plays Yoon Yi-jun, the Taegang Group heir who becomes a suspect in a murder case, while Seol In-ah plays Kang Jae-hee, a former special forces soldier turned detective who disguises herself as a man to infiltrate his life as his personal secretary. The drama airs every Monday and Tuesday at 8:50 p.m. KST on tvN, and premiered on October 19.
The soundtrack has been rolled out in sequence alongside the drama, with STONE MUSIC, the OST production company, confirming the full seven-act lineup back on October 14. According to allkpop’s report on that announcement, the lineup spans a wide range of genres, from tense themes capturing the unpredictable relationship between the boss and his secretary to sweeter, heart-fluttering melodies for the romance. ALLDAY PROJECT’s Youngseo opened the soundtrack with “DARKROOM,” her first OST participation since debut, followed by Meego’s “Falling” and THAMA’s “Drawn.” I.N’s “Guilty Pleasure” arrives as the fourth installment, with Min Jiwoon’s “Shadow” and Tuesday Beach Club’s “Actually” still to come in sequence, alongside “Like You,” sung by lead actor Im Si-wan himself.
That sequencing matters for how the song will be heard. Earlier OST parts have been tied directly to key scenes: THAMA’s “Drawn,” the third part released on October 27, was placed over the ending scene of the drama’s fourth episode to heighten the romantic atmosphere between the leads, according to Starnews Korea. I.N’s track now enters the drama at a point where the central relationship is deepening, and its mix of excitement and restraint fits a story built on secrets, since Kang Jae-hee’s entire mission depends on her true identity staying hidden from the man she is investigating.
The drama itself got off to a solid start. According to Nielsen Korea figures reported by Cineplay, the premiere episode recorded a 5.6 percent nationwide household rating, with the unusual setup, a murder suspect and a detective disguised as his male secretary, drawing early attention. The series is based on the popular web novel “Why Don’t You Know I’m a Woman?” and blends thriller tension with romantic comedy, a combination that gives its soundtrack plenty of emotional ground to cover, from suspense to sweetness.
For Stray Kids fans, the release is also a chance to hear I.N outside the group’s usual sound. Stray Kids, who debuted under JYP Entertainment, have built their reputation on high-energy, self-produced music, and I.N’s role within that system is usually one voice among eight. A solo OST strips that back to a single vocal line over a live-band arrangement, and “Guilty Pleasure” leans into that intimacy, letting the flutter-and-hesitation lyric theme do the work rather than production force. It is a different kind of showcase, and one that suits a drama whose leads are constantly saying one thing while feeling another.
“Guilty Pleasure” is available on major streaming platforms following its November 2 release, and is expected to feature in upcoming episodes of “My Guilty Human” as the drama continues its Monday-Tuesday run on tvN.
