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Unlock Your Potential

Be the Best Version of Yourself

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8Countries — clinics held
25+Schools & club teams
1,000+Athletes trained
How It Works

Everything We Offer

Three ways to train with us — one-on-one with our pros, team-to-team with Japanese clubs, or at one of our camps.

01
Train with Pros
Training with our pros in Japan
In Japan
1-on-1, small-group, and clinic training with our professional coaches — tailored to your position, goals, and level.
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Our pros running a clinic abroad
In Your Country
Our professional coaches travel internationally to run clinics and sessions, bringing Japanese methodology to players worldwide.
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02
Train with Teams
Training with Japanese teams
In Japan
Train and compete alongside junior high, high school, college, and professional teams in real Japanese gyms.
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Bringing a Japanese team to compete in your country
In Your Country
Bring a Japanese team to your tournament or training abroad — we arrange team tours to train and compete with your players.
Inquire
03
Volleyball Camps
One Core Camp in Japan
One Core Camp
Our flagship immersive camp in Japan — train alongside Japanese teams and experience the culture firsthand. Girls and boys run separately.
Reserve Your Spot
Customized camp for your team
Customized Camp for Your Team
A camp built around your team — your goals, level, and schedule, in Japan or abroad. Send an inquiry and we'll design it with you.
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Availability & Booking

Check the Schedule

View availability month by month — Train with Pros, Train with Teams, and Volleyball Camp sessions. Click any open date to book, or a grayed date to inquire.

Train with Pros
1-on-1, small group & clinics with our professional coaches
Train with Teams
Practice & compete with Japanese school and club teams
Volleyball Camps
Multi-day camps — One Core & custom · Coaching & cultural experiences
View Full Calendar →
Winter Camp · Gifu, Japan

Train Like a
Japanese Player

One immersive week inside Japanese volleyball. Train under professional coaches in Gifu, live the discipline and culture firsthand, and come home a sharper, more complete player.

Camp · Boys
Gifu, Japan
Dates and pricing on the camp page
Camp · Girls
Gifu, Japan
Dates and pricing on the camp page
Reserve Your Spot →
onecorevolleyball.com — Coming Soon
A One Volleyball Japan × The Core Volleyball program · @the_core_volleyball
Our Coaches

Coached by Japan's Best

Professional and national-team players lead every session — the people behind One Volleyball Japan.

Taichi Kawaguchi
Taichi Kawaguchi
Head Coach · Founder
Issei Maeda
Issei Maeda
Setter
Masahiro Yanagida
Masahiro Yanagida
Outside Hitter
Issei Otake
Issei Otake
Outside Hitter
Riho Otake
Riho Otake
Middle Blocker
Kotoe Inoue
Kotoe Inoue
Libero
Miku Isogai
Miku Isogai
Outside Hitter
Mana Toe
Mana Toe
Libero
Meet All Our Coaches →
Reviews

What Players & Families Say

Straight from the parents and players who've trained with us in Japan.

The camp exceeded my expectations. It was intense in the best way, and the cultural exchange with the high school players, college players, and pro guest coaches made the whole experience even more meaningful.
Camp parent · June 2026 · United States
We were truly amazed and touched by the teamwork of the Japanese team. As a teacher myself, I could see why people overseas respect Japanese teams so much — everyone works together, no one complains or blames others, everyone collaborates. A priceless experience!
Camp parent · United States
These last three days have truly been amazing. We're so grateful to you and Taichi for helping our daughter strengthen her skills and experience training in Japan.
Camp parent · United States
Those high school students have an incredible level — but in two hours they taught us more than just volleyball. Very impressive. Thank you for the experience for my daughter!
Parent of a camper
Thank you so much for all the work you put in to make such an amazing experience for the players.
Guest coach · Camp 2026
Macka really wants to be part of One Volleyball again!
Camp parent
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One Volleyball Japan camp
One Volleyball Japan team group
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Real clinics · Real players · Real Japan

One Volleyball Japanは現在、日本国内の選手・チーム向けのプログラムを準備中です。