September 2025 is stacked with new, unforgettable K-dramas. From nostalgic 90s romance and brilliant con artists to crypto chaos and political thrillers, this month delivers a powerhouse lineup of shows across Netflix, Prime Video, Hulu, Disney+, and more.
Here’s your complete guide to the Korean dramas premiering this September 2025—organized by release date with genres, platforms, and quick teasers so you can plan your watchlist.
1. The Mantis: Original Sin
Premieres: September 5 • Network: SBS / Netflix
Genre: Crime, Mystery, Thriller
A detective, Cha Su-yeol, must team up with his mother—the serial killer known as “the Mantis”—when copycat murders mimic her decades‑old crimes, drawing them into a chilling and complex investigation. Based on the French Series, La Mante.
💭 Chilling, fast-paced, and psychologically intense.
2. My Youth
Premieres: September 5 • Network: JTBC / Viki
Genre: Youth, Romance Drama, Life
Sun Woo‑hae, once a child actor, now a novelist and florist, reunites with his first love, Sung Je‑yeon. Their renewed connection forces both to confront the past and redefine their present selves amid emotional resonance and personal growth.
💭 A gentle, heartfelt second-chance romance.
3. Confidence Queen
Premieres: September 6 • Network: TV Chosun / Prime Video / Coupang Play (KR)
Genre: Action, Comedy, Drama
A brilliant con woman, Yoon Yi-rang (IQ 165), assembles a trio of swindlers to orchestrate elaborate schemes against greedy villains in real estate and finance—mixing fast-paced heists, humor, and clever deception
💭 Smart, stylish, and endlessly entertaining.
4. Tempest
Premieres: September 10 • Network: Hulu / Disney+
Genre: Action, Drama, Political Thriller, Espionage
A former diplomat and a mysterious international special agent uncover a dangerous global conspiracy tied to an assassination attempt on a presidential candidate—threatening the stability of the Korean Peninsula and international power structures.
💭 Ideal for fans of dramas like Vagabond and Designated Survivor.
5. Project Y (Film)
Premieres: September 11 • Network: In Theaters
Genre: Action, Adventure, Thriller, Crime
Two young friends in Seoul's Gangnam district plot a dangerous heist to steal ₩8 billion in gold, hoping to escape their desperate circumstances. When their plan goes wrong, their bond is tested in a high-stakes crime drama.
💭 A sleek, neo-noir heist drama that dives deep into loyalty, desperation, and the price of ambition.
6. You & Everything Else
Premieres: September 12 • Network: Netflix
Genre: Drama, Friendship, Terminal Illness, Coming of Age
Two childhood friends drift apart over the years—but their bond is tested when one asks the other to help navigate her final days—illuminating themes of rivalry, empathy, and enduring connection.
💭 A quiet, emotional reflection on life, rivalry, and letting go.
7. A Hundred Memories
Premieres: September 13 • Network: JTBC / tvN asia
Genre: Comedy, Drama, Romance
Set in the 1980s, two young bus attendants—Go Young-rye and Seo Jong-hee—forge an unbreakable friendship while navigating dreams, ambitions, and their shared first love, Han Jae-pil.
💭 A beautifully told coming-of-age drama wrapped in retro vibes.
8. To The Moon
Premieres: September 19 • Network: MBC TV
Genre: Workplace, Romantic Comedy, Slice-of-Life
Three underpaid office workers, struggling with financial stress, turn to cryptocurrency investments to secure a better future—sparked by hopes of escape and camaraderie amid societal pressures.
💭 For fans of Start-Up meets Itaewon Class.
9. Walking on Thin Ice (a.k.a Eunsoo’s Good Day)
Premieres: September 20 • Network: KBS2
Genre: Thriller, Crime, Life
An ordinary mother stumbles upon a massive cache of drugs—this discovery thrusts her into a dangerous world, forcing an unexpected alliance with a teacher, and setting off a gripping tale of survival and hidden identities.
💭 Lee Young Ae’s riveting return to the small screen.
10. First Lady
Premieres: September 24 • Network: MBN
Genre: Political Drama, Intrigue, Thriller
As inauguration looms, the president-elect demands a divorce from his future first lady—intense political intrigue and family secrets unravel over 67 fateful days, revealing power struggles behind closed doors.
💭 Political drama meets emotional reckoning.
11. The Murky Stream
Premieres: September 26 • Network: Disney+
Genre: Historical Drama, Action
In a turbulent Joseon era, the lives of three individuals—a gangster with a hidden past, a principled woman, and an earnest official-in-waiting—converge amid turbulence and fate on the murky Gyeonggang River.
💭 For fans of epic storytelling and layered period intrigue.
Final Thoughts 🔖
Whether you're into 90s nostalgia, gritty thrillers, slow-burn romances, or political power plays, September 2025 has something for every type of K-drama fan. Mark your calendars and prep your watchlist—you won't want to miss a single premiere.
👉 What are YOU most excited to watch? Drop your pick in the comments or share your recs with fellow fans.
👉 And if you loved this list, check out the August 2025 K-Drama Watchlist or our roundup of 6 K-Dramas for Guys: The Essential Starter Pack.
Keep Watching, Keep Feeling
Thanks for reading. 💖
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