If you’ve been making your way through Korean dramas on Netflix, *Friendly Rivalry* (선의의 경쟁) — released in early 2025 — deserves a spot at the top of your watchlist. If you loved *The Glory* for its brutal social hierarchies and slow-burn revenge, this one cuts even deeper and keeps things tighter. It’s a mystery thriller wrapped around one of the most intense female dynamics in recent K-drama history, and it doesn’t let go.
The series ran from February 10 to March 6, 2025, on LG U+ Mobile TV in Korea — 12 episodes in total — before landing on Netflix for global audiences. It’s based on a webtoon by Song Chae-yoon and Shim Jae-young that already had a dedicated fanbase, so anticipation was high before the cameras even rolled. Director Kim Tae-hee managed to carry over exactly what made the source material work: that suffocating sense of tension that never quite breaks.
The setting is Chaehwa Girls’ High School, an elite institution where only the top 1% of students in South Korea earn a place. Think *Elite* on Netflix — that same world of immaculate uniforms and quiet cruelty — except the weapon here isn’t money or connections alone. It’s grades. Our protagonist, Woo Seul-gi (Chung Su-bin), grew up in an orphanage after being separated from her parents as a child. When she transfers to Chaehwa, it looks like a shot at a better future — but her reasons run much darker. Her father, a former member of the CSAT question committee (Korea’s make-or-break college entrance exam board), died under suspicious circumstances, and she’s there to find out why.
Standing in her way — and pulling her closer at the same time — is Yoo Je-i (Lee Hye-ri). Perfect grades, perfect looks, perfect family background. She has held the top spot at Chaehwa without exception, and she’s not about to share it. Their first meeting is cold and charged, but as the story unfolds, what starts as rivalry begins curling into something stranger: friendship, obsession, and a tension that’s hard to name. That dynamic is exactly what set the international fanbase on fire. The GL (Girls’ Love) subtext here isn’t spelled out — it lives in lingering eye contact and carefully restrained emotion, which honestly makes it hit harder than anything more explicit would.
Lee Hye-ri is a revelation in this role. Best known internationally for *Reply 1988* and her time in the K-pop group Girl’s Day, she has always had a warm, bright screen presence. Yoo Je-i is the opposite — cold, calculating, and quietly obsessive — and Hye-ri pulls it off completely. Her chemistry with Chung Su-bin is the engine the whole show runs on. The series holds a 7.7 on IMDb, and in China, where it wasn’t even officially released, it racked up over 68,000 followers on its Weibo fan page — a testament to how far word-of-mouth carried it across Asia.
That said, it’s not without flaws. At 12 episodes, the pacing holds well until the final stretch, where the plot rushes in ways that leave some early threads dangling. A few viewers also wished the GL elements had been pushed further rather than kept at a simmer. One thing worth knowing before you start: the CSAT (수능, Suneung) is a single exam held every November that effectively determines a student’s entire academic future in Korea. Understanding what’s at stake with that test makes the desperation of every character feel completely real rather than melodramatic.
Whether you’re new to K-dramas or a longtime fan, *Friendly Rivalry* is worth your time. Cutthroat academic competition, a father’s mysterious death, and two girls caught between rivalry and something deeper — it’s all streaming now on Netflix.
References: Wikipedia, MyDramaList, IMDb, South China Morning Post
Images: Official posters and stills courtesy of Netflix.
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Looking for another underrated Netflix K-drama? Don’t miss my Netflix’s “Teach You A Lesson” Review: School as a Microcosm of Society.
