Liar (Korean title: 라이어; Japanese title: 完璧な嘘, "The Perfect Lie") is an MBC Friday–Saturday psychological thriller starring Yoo Yeon-seok and Seo Hyun-jin, who reunite about ten years after Dr. Romantic. It premiered on October 30, 2026 and streams on Disney+ (Star Original in Japan; 12 episodes).
📺 Drama Info
| 🎬 Title | Liar (라이어) — Japanese title: 完璧な嘘 |
| 📅 Premiere | October 30, 2026 (Fri–Sat, 21:50 KST, MBC) |
| 🎞️ Episodes | 12 |
| 🎥 Director | Jo Young-min |
| ✍️ Writer | Baek Jae-young (original script) |
| 📱 Streaming in Japan | Disney+ (Star Original), from October 30, 2026; rated 15+ |
| 🏷️ Genre | Psychological thriller / mystery |
📖 Plot (no spoilers)
A perfect first date that everyone would envy. But the next day, Min Jun-ho and Kang Ji-seon have completely different memories of "something that happened that night", and each insists on the opposite version of events. Who is lying? One tries to expose the truth, the other to hide it — an extreme psychological battle in which neither gives an inch begins.
The poster tagline reads, "One of the two is lying" (둘 중 한 사람은 거짓말을 하고 있다).
🎭 Cast
Yoo Yeon-seok as Min Jun-ho — a cardiac surgery specialist and single father who is trusted by everyone around him. Known for the Dr. Romantic series and Prison Playbook, he plays a "man whose true self is hard to read".
Seo Hyun-jin as Kang Ji-seon — an elementary-school librarian teacher. Known for Another Oh Hae-young, Romance Is a Bonus Book and Dr. Romantic, she moves between everyday women and demanding roles.
✨ Highlights
- A golden pair, ten years on: the two reunite in a tense relationship where you cannot tell friend from foe.
- A director known for psychology: Jo Young-min, known for Do You Like Brahms?, takes on a thriller.
- A film company's first series: reportedly the first drama series from the film company behind Broker and Black Nuns.
📱 Where to Watch
| Disney+ (Star Original) | From October 30, 2026 in Japan (rated 15+) |
Disney+'s synopsis says their memories of the night "were completely different". Availability varies by country — please check Disney+ in your region.
❓ Frequently Asked Questions
How many episodes does Liar have?
12 episodes. In Korea it airs on MBC on Fridays and Saturdays at 21:50 (KST).
Where can I watch Liar?
On Disney+ (Star Original) in Japan, from October 30, 2026.
Why is Liar called 完璧な嘘 in Japan?
The Korean title is simply 라이어 ("Liar"). The Japanese title 完璧な嘘 means "The Perfect Lie", pointing to the "perfect" first date at the start of the story.
Who stars in Liar?
Yoo Yeon-seok (Min Jun-ho) and Seo Hyun-jin (Kang Ji-seon).
Who made Liar?
Directed by Jo Young-min and written by Baek Jae-young (original script).
🔥 Soonho's Take
"The same night, but different memories" — just the premise makes you want to watch. Who would you believe?
🎬 First Teaser (MBC official)
MBC's first teaser, titled "Two people with conflicting statements — who is the liar?". Korean audio, no subtitles. The description is ours.
Based on public information as of November 2026. Broadcast and streaming details may change.