Series synopsis
Love In Protocol, also known as 러브 인 프로토콜 is a South Korean drama television series that premiered on Heavenly on January 17, 2026. It ended on February 7, 2026. It was created by Yoo Hwansang. It stars Lee Sang-min, Jeong Jae Jong and Kwak Geon-hee.
Jeong Yeon joins the research lab of Yu Geon, his former private tutor, as an intern. However, Yu Geon’s attitude upon their reunion is cold. An experiment that studies emotions, and two people facing each other once again. Subtle waves begin to ripple between Jeong Yeon and Yu Geon.
Premise
Jeong Yeon joins the research lab of Yu Geon, his former private tutor, as an intern. However, Yu Geon’s attitude upon their reunion is cold. An experiment that studies emotions, and two people facing each other once again. Subtle waves begin to ripple between Jeong Yeon and Yu Geon.
Cast and characters
Leading cast
- Lee Sang-min as Min Jeong-yeon
- Jeong Jae Jong as Ha Yu-geon
- Kwak Geon-hee as Choi Myeong-jin
Episodes
This series spans 1 season with 4 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 4 | January 17, 2026 | February 7, 2026 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Don't Look at Me Like That As an intern at a cognitive science institute, Jeong-yeon meets Yu-geon, his former high school tutor. |
January 17, 2026 |
| 2 |
"Do you still see me as a child?" Participating in a VR test for an emotional reaction experiment, Jeong-yeon faces his own feelings through questions. |
January 24, 2026 |
| 3 |
"You don't have to feel guilty, professor" For the first time late, Jeong-yeon appears in the laboratory injured as in childhood, and Yugeon reacts angrily when he sees him. |
January 31, 2026 |
Production
Release
| Original network/platform | Heavenly |
|---|---|
| First aired | January 17, 2026 |
| Last aired | February 7, 2026 |
| Status | ended |