Seo Kang Joon, the acclaimed South Korean actor, is set to make a special voice appearance in the SBS youth romance drama Spring of Youth. The announcement, made on June 23, has generated excitement among fans and K-drama enthusiasts, as Seo’s participation is expected to bring a fresh dimension to the popular series.
A Unique Cameo for a Rising Drama
Seo Kang Joon’s involvement is not as an on-screen character, but as a mysterious and intriguing figure who will appear solely through his voice. This special cameo is intended to support his labelmate and Undercover High School co-star, Kim Sun Min, further highlighting the camaraderie within the Korean entertainment industry.
The production team expressed their gratitude, stating, “We are truly grateful to Seo Kang Jun for willingly agreeing to make a special appearance. Be sure to tune in to episode 9 to see how his standout performance adds even more depth and richness to the scene”.

About ‘Spring of Youth’
Spring of Youth follows the story of Sa Gye (Ha Yoo Joon), a former member of a top K-pop band who is forced to navigate college life after being ousted from his group. As he adjusts to his new environment, he finds love and rekindles his passion for music by joining a campus band. The series also stars Park Ji Hu as Kim Bom and N.Flying’s Lee Seung-hyub as Seo Tae Yang, Sa Gye’s romantic rival.
Seo Kang Joon’s voice cameo will premiere in the ninth episode, airing on June 25 at 10:40 PM KST.
A Busy Year for Seo Kang Joon
This special appearance comes as Seo Kang Joon is making a strong return to the entertainment scene. He recently headlined the drama Undercover High School and is also set to make a cameo in the upcoming series Boyfriend on Demand.
Where to Watch
Fans can catch Spring of Youth on SBS TV and streaming platform Viki, with Seo Kang Joon’s much-anticipated voice cameo featured in episode 9.
Seo Kang Joon’s participation is expected to add an intriguing twist to Spring of Youth, making the upcoming episode a must-watch for fans of both the actor and the series