Series synopsis
Secret Relationships, also known as 비밀 사이 is a South Korean drama television series that premiered on watcha on February 26, 2025. It ended on March 20, 2025. It was created by McQueen Studio. It stars Kim Jun-seo, Cha Sun-hyung, Kim Ho-young and Cha Jung-woo.
Trapped in an escalating love square, a salaryman must navigate his tumultuous feelings for a colleague, a former tutor, and an heir.
Premise
Trapped in an escalating love square, a salaryman must navigate his tumultuous feelings for a colleague, a former tutor, and an heir.
Cast and characters
Leading cast
- Kim Jun-seo as Jung Da-on
- Cha Sun-hyung as Ju Sung-hyun
- Kim Ho-young as Shin Jae-min
- Cha Jung-woo as Kim Soo-hyun
- Lee Hwi-seo as Albi Construction Employee
- Im Too-chul as Albi Construction Employee
- Jung Kyung-ho as Albi Construction Employee
- Park Eun-young as Albi Construction Employee
Guest cast
- Cha Mi-kyeong as Seong-hyeon's Grandmother
- Seo Jin-won as Da On's father
- An Tae-rin as Seo Ji-an
- Kim Seong-tae as Park Jeong-hun
- Choi Jung-woo as Su-hyeon's Father
- Lee Young-eun as Da-seol
- Yoo Na-gyeol as Nurse
- Su Hyun as [University student #1]
Episodes
This series spans 1 season with 8 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 8 | February 26, 2025 | March 20, 2025 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Episode 1 Daon is a rational and calm person in his company and known for often fighting with his colleague Sunghyeon. One day Daon once again sees Jaemin, the senior he admired in university, along with Suhyeon, the heir to the company, and a relationship emerges between the four… |
February 26, 2025 |
| 2 |
Episode 2 When Daon becomes distracted at work, Sunghyeon proactively notices and starts caring for him. Their relationship starts to become more and more ambiguous. |
February 27, 2025 |
| 3 |
Episode 3 Suhyeon returns to the company as a department head and asks Daon if he’s still in contact with Jaemin. Jaemin confesses his attraction to Daon, and the entanglement escalates. |
March 5, 2025 |
Production
Release
| Original network/platform | watcha |
|---|---|
| First aired | February 26, 2025 |
| Last aired | March 20, 2025 |
| Runtime | 35 minutes |
| Status | ended |