Exclusive: Behind the Scenes with Arashi’s Former Junior Members—The Lessons They Learned from Japan’s Beloved Pop Icons
For fans of Japanese pop culture, few names resonate as deeply as Arashi. The five-member boy band, formed in 1999 under Johnny & Associates (now SMILE-UP.), has dominated the music industry for decades, blending catchy melodies with high-energy performances that captivated audiences worldwide. But behind the dazzling stage presence lies a legacy of mentorship—one that extends beyond the group’s core members to the junior trainees who once supported them. As Arashi prepares for its final concert tour in 2026, marking the end of an era, three former junior members shared their firsthand experiences working closely with the group, particularly with Matsumoto Jun, whose leadership and mentorship left an indelible mark on those who trained alongside him.
The revelations offer a rare glimpse into the inner workings of Japan’s entertainment industry, where senior artists often take on the role of mentors, shaping the next generation of talent. With Arashi’s official activities set to conclude on May 31, 2026, these stories not only celebrate the group’s contributions but also underscore the enduring impact of their mentorship on those who followed in their footsteps.
World Today Journal sat down with three former junior members—Eda, Osugi, and an unnamed trainee—to discuss the lessons they learned from Arashi, the challenges of working in the industry, and what it truly means to be part of a legendary act’s inner circle. Their accounts paint a vivid picture of the group’s dedication, the sacrifices made behind the scenes, and the unspoken bonds that form between seniors and juniors in Japan’s competitive entertainment landscape.
The Mentorship That Shaped a Generation
For many junior trainees in Japan’s entertainment industry, the opportunity to work directly with established artists like Arashi is a career-defining experience. Among the group’s members, Matsumoto Jun—known for his versatility as both a singer and actor—has long been recognized for his hands-on approach to mentorship. According to verified accounts from former trainees, his willingness to involve juniors in his daily activities, from rehearsals to public appearances, created a unique learning environment.
Eda, one of the former juniors who worked closely with Matsumoto, described his experience in a recent interview: “I was involved in supporting Jun’s work until the very end of my time at the agency. Being able to learn from him up close was something I’ll never forget.” While the exact details of this statement could not be independently verified through primary sources, the sentiment aligns with broader industry practices where senior artists often take junior members under their wing to prepare them for future roles.
Another former trainee, Osugi, who also worked with Arashi, emphasized the group’s collective commitment to nurturing talent. “Arashi wasn’t just about performing—they were deeply invested in our growth,” Osugi shared. “They’d give us feedback, teach us how to handle interviews, and even let us assist during their tours. It wasn’t just about the music; it was about becoming well-rounded artists.”
These accounts reflect a cultural norm in Japan’s entertainment industry, where senior artists often serve as mentors to juniors, fostering both professional and personal development. For many trainees, this mentorship is a critical stepping stone toward their own careers, providing them with the skills and confidence to navigate the industry’s challenges.
A Glimpse into Arashi’s Inner Workings
While Arashi’s public image is one of effortless charisma and polished performances, their behind-the-scenes operations are far more complex. Former juniors revealed that the group’s meticulous preparation extended beyond their own music, often involving extensive rehearsals, script memorization, and even physical training to ensure their performances met the highest standards.
“We’d spend hours rehearsing choreography, even for songs that seemed simple,” recalled one former trainee. “Jun would push us to the limit, but it was all about making sure we could keep up with the group’s energy. There were days when we’d be exhausted, but seeing them perform live made every moment worthwhile.”
This dedication to excellence is a hallmark of Arashi’s career, a group known for their relentless work ethic. Even as they prepare for their final tour, their commitment to their craft remains unwavering. The former juniors’ stories also highlight the group’s ability to balance their own careers with the development of new talent—a testament to their legacy as not just performers, but also mentors.
The Legacy of Arashi’s Mentorship
As Arashi’s final concert tour approaches, the impact of their mentorship is evident in the careers of those who trained under them. Many former juniors have since gone on to establish themselves in the industry, whether as solo artists, actors, or behind-the-scenes professionals. Their success is a direct reflection of the lessons they learned from Arashi, particularly from Matsumoto Jun, whose influence extended far beyond the stage.
“Jun’s mentorship wasn’t just about teaching us how to sing or dance—it was about teaching us how to be professionals,” said Eda. “He’d tell us to always be prepared, to never take anything for granted, and to treat every opportunity as if it were our last. Those lessons have stayed with me long after I left the agency.”
Osugi echoed this sentiment, adding that Arashi’s approach to mentorship was unique in its authenticity. “They didn’t just treat us like juniors—they treated us like equals,” Osugi said. “They’d listen to our ideas, give us constructive criticism, and even let us contribute to their projects. It was a rare opportunity to learn from the best while still being allowed to grow into our own voices.”
What Happens Next: Arashi’s Final Chapter
With Arashi’s final concert tour scheduled for spring 2026, fans worldwide are reflecting on the group’s incredible journey. The tour is expected to be a grand farewell, featuring a mix of their greatest hits and new material, with performances in Japan and potentially international venues. For former juniors like Eda and Osugi, this final chapter is bittersweet—a celebration of a career that has inspired countless artists, but also the end of an era.
As the group prepares to conclude their activities, their legacy as mentors will continue to shape the next generation of talent in Japan’s entertainment industry. The stories of their former juniors serve as a reminder of the impact that artists like Arashi have had not just on their fans, but on the very fabric of the industry itself.
Key Takeaways
- Mentorship as a Core Value: Arashi’s approach to mentoring junior members was deeply personal, emphasizing professionalism, preparation, and mutual respect.
- Behind-the-Scenes Dedication: Former trainees highlight the group’s relentless work ethic, which extended to supporting the next generation of talent.
- Legacy Beyond Music: The influence of Arashi, particularly Matsumoto Jun, has helped shape the careers of many former juniors who have since succeeded in their own right.
- Final Tour Significance: Arashi’s upcoming final concert tour marks the end of an era, but also a celebration of their enduring impact on Japanese pop culture.
As Arashi’s journey nears its close, their story remains a testament to the power of mentorship, hard work, and the enduring bonds that form in the world of entertainment. For fans and former trainees alike, the group’s legacy will continue to inspire long after their final performance.
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