A new K‑Pop reality show is on the way, and fans of SM Entertainment are already paying close attention. “Reply High School” is a trainee-focused variety series created by SM Entertainment (the company behind Girls’ Generation, EXO, Red Velvet, NCT, aespa, and more) in collaboration with production company eggiscoming.
The title may sound familiar to long-time Korean drama fans because it brings back the nostalgic feeling of the famous “Reply” style—looking back on past eras and reliving cultural moments. This show uses that idea in a K‑Pop way, letting trainees step into different generations of music and trends that shaped the industry.
What Is “Reply High School” About?
“Reply High School” is a time-slip growth variety show where 15 male trainees (plus unrevealed trainees) enter a fictional school called Woojeong (Friendship) High School. The trainees go through “classes” and missions while searching for the answer to one big question: what it takes to debut.
The school is divided into three era-based classes:
- 1990s class
- 2000s class
- 2010s class
Instead of only practicing choreography in a studio, the trainees experience each era’s culture—music styles, performances, trends, and the overall vibe that defined those years.
Genre: K‑Pop / Variety / Reality
Meet the Participants (SMTR25)
The confirmed lineup includes trainees known as SMTR25, who have already appeared at SMTOWN events and performances.
- HANBI (born 2003) — Korea
- SONGHA (born 2004) — Korea
- DANIEL (born 2005) — Korea
- HYUNJUN (born 2006) — Korea
- HAMIN (born 2006) — Korea
- JAEWON (born 2008) — Korea
- WOOLIN (born 2008) — Korea
- NICHOLAS (born 2004) — United States
- KASSHO (born 2006) — Japan
- JUSTIN (born 2006) — Japan
- HARUTA (born 2006) — Japan
- SADAHARU (born 2007) — Japan
- CHARLIE (born 2007) — Thailand / United Kingdom
- KACHIN (born 2007) — Thailand
- TATA (born 2008) — Thailand
Why “Reply High School” Is Worth Watching
1) A trainee reality show with an era concept
The biggest twist is the “school” setup. Trainees are placed into 1990s, 2000s, and 2010s themed classes, which means they don’t just perform songs—they learn what made those eras iconic.
Because many trainees were born in the 2000s, it’s especially fun to watch them discover the culture of years they didn’t personally live through.
2) SMTR25 is already building a fanbase
SMTR25 became known after being introduced during a major SMTOWN event. Since then, they have gained attention through different stages and appearances, making “Reply High School” feel like the next big step in their journey.
3) A production team known for fun variety shows
The show is led by producer Shin Hyo Jung and writer Kim Dae Joo, who are recognized for variety projects including “NANA bnb with SEVENTEEN” and “NANA TOUR with SEVENTEEN.” Viewers are expecting strong storytelling, natural humor, and memorable cast chemistry.
4) Surprise appearances by SMTOWN seniors
Another major reason fans are excited is the chance to see SM Entertainment senior artists show up as guests. Teasers have already hinted at interactions with well-known idols, which can bring both funny moments and real advice that trainees can learn from.
5) A more real look at future idols
On stage, idols look perfect. But in a reality show like this, you get the human side—nervous introductions, awkward jokes, mistakes during missions, and genuine friendships forming. For fans, that kind of behind-the-scenes growth is what makes trainee shows so addictive.
Final Thoughts
If you love K‑Pop trainee reality shows, enjoy nostalgic throwbacks to older K‑Pop eras, or simply want to meet potential future SM Entertainment idols, “Reply High School” is a series to keep on your watchlist. With its era-based classes, international trainee lineup, and surprise guest appearances, it offers both entertainment and a closer look at the debut journey.
