Exciting Announcement: Summer Jiu-Jitsu Koshien 2025 Now Accepting Entries!

Summer Jiu-Jitsu Koshien 2025: Registration Open!

The highly anticipated Summer Jiu-Jitsu Koshien 2025 is gearing up to take place on October 12th, 2025, at the Yoyogi National Gymnasium's second venue in Shibuya, Tokyo. Organized by the NPO SJJJF Sports Jiu-Jitsu Japan Federation, under the leadership of Executive Director Ryozo Murata, this tournament promises an exhilarating experience for both participants and spectators alike. In collaboration with ISAMI Co., Ltd., led by CEO Tsukihiro Iso, the event aims to promote and develop jiu-jitsu among the youth, creating opportunities for personal growth through martial arts.

Anticipation is high, with approximately 300 athletes expected to compete, accompanied by nearly 1,000 enthusiastic spectators filling the venue. This event is not restricted to high school students alone; it welcomes young participants ranging from kids to juveniles, fostering inclusivity and broadening the community of jiu-jitsu practitioners.

A Look Back at Spring Koshien

The last tournament, Spring Jiu-Jitsu Koshien held on April 26, featured intense matches where competitors showcased the results of their rigorous training. Regardless of the outcomes, athletes celebrated each other's efforts, demonstrating the values of friendship and respect fostered through jiu-jitsu. One notable highlight was Yujiro Ozaki from Carpe Diem, who claimed victory in the Open Class for 16-17 year-olds (White, Blue, Purple).

What to Expect in Summer 2025

Summertime Koshien offers an opportunity for young athletes to shine and grow, as there will be new categories to encourage a diverse array of participants. The commitment to nurturing healthy development and collaboration with schools across the country is a priority moving forward. Winners from the Open Class are set to receive trophies and certificates, with ISAMI also presenting gi and bags to prize winners.

Opening Remarks by Ryozo Murata

During the opening ceremony, Ryozo Murata expressed, "To all the athletes, aim for victory and showcase your best efforts. Your hard work, disappointments, and the support from family and friends—express it all on the mat as a representation of your youth. May this day remain special in your lives forever."

Insights from ISAMI's CEO

Tsukihiro Iso, CEO of ISAMI, emphasized the company's vision of supporting aspiring children. He stated, "Jiu-jitsu cultivates both mind and body and is incredibly significant for youth development. We are committed to assisting the foundation and growth of Brazilian jiu-jitsu for the promising youth of tomorrow."

A Growing Tradition

Launched in 2022, the Jiu-Jitsu Koshien now holds two events annually, with the upcoming summer edition marking its sixth occurrence. The yearning to expand this competitive platform further signifies the sustained interest in martial arts among younger generations.

Awards and Achievements

In terms of team achievements, X-TREME EBINA has secured first place; while Paraestra and Carpe Diem (Mita) followed respectively in second and third positions, showcasing remarkable talent and dedication.

Venue & Event Details

- Event Name: Summer Jiu-Jitsu Koshien 2025
- Date: October 12, 2025
- Location: Yoyogi National Gymnasium, second venue, Shibuya, Tokyo
- Expected Participation: Approximately 300 participants (ages 4 to high school)
- Organizer: NPO SJJJF Sports Jiu-Jitsu Japan Federation
- Collaboration: ISAMI Co., Ltd. ISAMI Official Site

Dive into Jiu-Jitsu History

Jiu-jitsu, often referred to as Brazilian jiu-jitsu or Gracie jiu-jitsu, is a grappling-based martial art rooted in Japan. Its evolution began with Mitsuyo Maeda, who introduced jiu-jitsu to Brazil, leading to the Gracie family's prominent role in developing the sport further.

Distinctive Features of Jiu-Jitsu

Focusing on ground techniques, jiu-jitsu employs techniques like joint locks and chokeholds to determine victories. Unlike other martial arts where physical size can be an advantage, jiu-jitsu's structure ensures that techniques and strategies hold more weight, providing a level playing field for participants.

The SJJJF events categorize competitors by age and weight to ensure fairness, making it accessible for both serious competitors and hobbyists. The absence of strikes enhances safety, encouraging participation from all demographics, including women and the elderly, with instances of 80-year-olds training alongside youths.