What if your twin sister stole your life? MBC’s explosive new revenge K-drama “First Man” drops this December with a twist that will leave you breathless. Two women. One face. Deadly intentions. You won’t believe how far they’ll go. Ready to uncover the truth behind Korea’s most anticipated December drama?
“First Man” (첫 번째 남자) Korean Drama 2025
Korean drama “First Man” is a revenge story with an intriguing premise that you must watch this month. It offers high-stakes scenes with Oh Hyun Kyung’s chilling performance as an ambitious villain. The daily episodes are filled with emotional punches and shocking reveals that will spice up your curiosity.
Storyline
“First Man” tells the story of twin sisters Oh Jang-mi and Ma Seo-rin, who were separated at birth by the cunning Chae Hwa-young. Oh Jang-mi grows up to be warm-hearted and honest, while the other becomes a spoiled heiress. Their paths collide when one steals the other’s identity for revenge.
Imagine, what do you feel when you’re waking up to find someone wearing your face? Living your dreams. Loving your people. This isn’t science fiction, it’s Oh Jang-mi’s reality. She fights to reclaim her stolen life while Ma Seo-rin clings to everything she’s taken.
The drama explores identity theft with emotional depth. Power struggles within the wealthy Dream Group family create constant tension. Love becomes a weapon. Trust becomes dangerous. Every episode asks: How far would you go for justice?
Meet the Faces Behind the Masks
Hahm Eun-jung shines in dual roles as both Oh Jang-mi and Ma Seo-rin. She transforms completely between characters—no CGI, just pure acting skill. Her warm smile as Jang-mi contrasts sharply with Seo-rin’s arrogant smirk. This is her most challenging role yet.
Oh Hyun-kyung steals scenes as Chae Hwa-young, the villain you love to hate. Hwa-young is a former star hiding ruthless ambition behind perfect makeup. You can anticipate Oh Hyun Kyung’s shift from elegant red carpet poses to moments of pure panic. Her performance gives you chills.
Yoon Sun-woo brings heart as Kang Baek-ho, the lawyer who sees through the deception. He loves Jang-mi but can’t prove who’s who.
Park Geon-il plays a cold chef brother, Kang Jun-ho, who’s hiding emotional scars behind his sharp words.
Kim Min-seol makes her lead debut as Jin Hong-ju in this series. Hong-ju is desperately in love with Baek-ho.
Behind the Scenes
Director Kang Tae-heum (known for “Desperate Mrs. Seonju”) crafts each scene with cinematic precision. Writers Seo Hyun-joo and Ahn Jin-young weave complex relationships that feel real. Their script balances revenge with emotional vulnerability.
MBC C&I and DK Entertainment join forces for this production. They create stunning visuals that elevate the daily drama format. Notice how lighting changes between characters—warm tones for Jang-mi, cold blues for Seo-rin.
The production team focuses on creating authentic emotional moments in this drama. They avoid dramatic, exaggerated scenes and focus on raw human reactions when facing tough situations. In each scene, you’ll feel every tear, every smile, every moment of uncertainty.
When and Where to Watch “First Man”
The new Korean drama “First Man” premieres on December 15, 2025. You can catch new episodes weekdays at 7:05 p.m. KST on MBC. International fans can stream it on Kocowa with subtitles. It has 120 episodes, with each episode running 35 minutes—perfect for your daily commute or lunch break.
Reasons to Watch K-Drama “First Man”
Hahm Eun-jung is an idol-turned-actor with a long list of dramas and movies since her acting debut in 2004 as a supporting actor in the drama “Little Women.” She married director Kim Byung-woo (the director of “Omniscient Reader”) in November 2025. You can see her acting prowess in this drama, as she brings fresh emotional depth to her roles. Her dual performance showcases years of growth since her T-ARA days.
You can also watch Kim Min-seol’s transition from reality TV (“Single’s Inferno”) to a dramatic lead. Her character, Jin Hong-ju, and her obsessive love create unexpected tension. You’ll find yourself rooting for her even when she makes questionable choices.
The drama is not only about revenge but also about identity, power, love, and betrayal. Each character has their own reasons for what they do. You will be questioning who is right and who is wrong. The moral complexity makes every episode unforgettable and stands out.
Final Thoughts
“First Man” isn’t just watching. This drama proves daily soaps can deliver premium storytelling. The twin mystery unfolds at a perfect pace—never rushed, never dragging.
You can feel Jang-mi’s frustration when no one believes her. Understanding Seo-rin’s fear of losing everything. Recognizing that sometimes, revenge looks a lot like justice. Debating who deserves sympathy. Wondering what you’d do in their shoes.
So, if you discovered your life was stolen, would you seek revenge… or rebuild? Please let us know in the comments below.
In the meantime, watch the trailer of K-drama “First Man” below.
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