LayarHijau – SM Entertainment is unveiling its newest trainee project through a reality program titled Reply High School. The show is scheduled to premiere exclusively on WeTV on February 13, 2026, at 8:00 PM WIB.
Framed around a school-life setting inspired by the 1990s, 2000s, and 2010s, the series follows the trainees’ daily training routines, evolving friendships, and personal growth as they pursue their dream of becoming professional K-pop idols. By blending multiple eras, the program delivers a nostalgic atmosphere while highlighting how each trainee develops both skills and character over time.
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SMTR25 consists of 15 multinational trainees representing South Korea, Japan, Thailand, and the United States. Their diverse cultural backgrounds add a distinctive dynamic to the team from the early stages of training.
Nicholas Lee, also known by his Korean name Lee Hak Rae, was born in California on December 27, 2004, and raised in Seoul. Fluent in Korean, he is recognized for his perfectionist mindset and strategic thinking. Even before debut, his striking visuals have already attracted considerable attention from fans.
Kassho, born in Fukuoka, Japan, on January 20, 2006, previously appeared on NCT Universe: LASTART. Over time, he has demonstrated noticeable growth, transitioning from a youthful image to a more mature and confident presence.
Justin, born in Hyogo, Japan, on January 27, 2006, brings prior industry experience as a former trainee under BIGHIT Music and a member of AMEZARI -RED STARS-. His strong dance skills and bright personality make him stand out on stage.
Oh Hyeon-jun, known as Hyunjun, was born in South Korea on February 12, 2006. Having trained for an extended period, he combines sharp visuals with a professional yet approachable demeanor among fellow trainees.
Woolin, the youngest member, was born on November 19, 2008. Despite his age, he has already drawn attention with his natural charm and promising talent. His active engagement in fan-related content hints at significant future potential.
Lee Han-bi, born October 24, 2003, is the oldest member of SMTR25. He gained early buzz for his blue hair, earning the nickname “blue-haired guy.” Beyond his eye-catching appearance, his vocal tone is often described as aligning well with SM Entertainment’s signature musical style.
Lee Song Ha, born in Gongju on April 19, 2004, has been training since 2017. Skilled in rap, vocals, and dance, he is frequently praised for his commanding stage presence.
From Thailand, Kachinthorn Lamkham, known as Kachin, was born on August 3, 2007. His participation in a Thai survival audition program shaped his competitive mindset and strengthened his multicultural appeal.
Sadaharu, born September 14, 2007, in Japan, previously performed with SMTR25 at SMTOWN LIVE 2025. He is known for his strong stage charisma and impressive communication skills.
Jiranchai Sereeviriyakun, or Tata, born April 1, 2008, in Thailand, was formerly a trainee under GMM Grammy. His entertainment background contributes to his expressive facial performance and confident stage presence.
Lee Daniel, born August 11, 2005, is of Korean-Uzbek heritage. His distinctive personal style and creative individuality set him apart within the group’s dynamic.
Haruta, born March 5, 2006, in Japan, has built his performance foundation through disciplined training, including sports such as tennis to enhance stamina. His focus on vocal technique and energetic delivery is one of his key strengths.
Lee Ha Min, or Hamin, born in Busan on August 5, 2006, is known for his attention to detail and disciplined approach to training. At the same time, he reveals a warm and relatable side in daily life.
Charlie Mullis, born May 26, 2007, has British-Thai heritage. Before becoming a trainee, he worked as a model and child actor, experiences that shaped his confidence and friendly character.
Finally, Yoo Seong Hyeon, known as Jaewon, was born on August 16, 2008, in South Korea. His strong determination and sociable personality make him memorable, with consistent dedication evident throughout the training process.
Through Reply High School, SMTR25 showcases not only technical skills in vocals, rap, and dance but also the personal journeys that shape these trainees into future idols. The program offers viewers an early glimpse into the making of a new generation of K-pop stars before they step onto larger stages in the industry.
