Marvel Fitness Co., Ltd. (Headquarters: Tokyo, Representative Director: Taku Terashima) will grand open its fully private personal gym "MARBELL GYM Mitaka Branch" in July 2026, following a pre-opening in June 2026. (Location: 3F, J's Building, 1-4-10 Nishikubo, Musashino-shi, Tokyo 180-0013)

MARBELL GYM Mitaka Branch

About MARBELL GYM

MARBELL GYM is a personal gym that offers custom-made personal training tailored to each individual's goals and physical condition, with the concept of "Achieve maximum efficiency faster than mass-produced personal gyms."

Naoya Amano, an IFBB PRO men's physique athlete, will serve as the representative trainer. Leveraging his global knowledge and experience, he provides high-quality training guidance to a wide range of individuals, from beginners to competitive athletes.

The Mitaka branch, opening now, will be the second location for MARBELL GYM. Utilizing the operational expertise gained at the Hachioji branch, we aim to become a beloved local hub for health and fitness in the Tama region.

Towards a Gym Where You Can "Continue Exercising," Not Just "Change Your Body"

In recent years, the number of personal gyms has been increasing annually with the growing health consciousness. However, many people feel that "all gyms have similar facilities and services" or are "anxious about attending due to lack of exercise experience."

To address these challenges, MARBELL GYM emphasizes not just changing the body in a short period, but also equipping clients with the knowledge and habits to continue exercising on their own after graduation.

We design training menus tailored to each person's physical characteristics and goals, and carefully explain "why this exercise is being done" and "what effects it has," fostering the ability to continue exercising independently.

Therefore, we cater to a wide range of objectives, including weight loss, body makeovers, health maintenance, posture improvement, muscle strengthening, and sports performance enhancement.

MARBELL GYM Hachioji Branch

Naoya Amano, IFBB PRO, appointed as Representative Trainer. World-class knowledge for all clients.

One of MARBELL GYM's major strengths is that Naoya Amano, an IFBB PRO men's physique athlete, serves as the representative trainer.

Amano continues to compete in world championships while overseeing programs and providing personal training at MARBELL GYM.

We aim to share the knowledge and experience gained by a world-class competitor not only with a select few athletes but with all clients, from exercise beginners to those aiming for health maintenance.

Naoya Amano's Major Competitive Achievements (IFBB PRO)

・2025 Beef Sasaki Classic Men’s Physique Class A Winner・Overall Winner

・2025 Mr.Olympia Amateur Japan Men’s Physique Class A Winner・Overall Winner

・2025 FWJ Japan PRO

Men’s Physique 8th Place

・2026 HUANJI NATURAL CHINA PRO Men’s Physique Winner

・2026 ZeniX Tokyo PRO

Men’s Physique 3rd Place

As a current IFBB PRO consistently achieving results in top-tier domestic and international competitions, he balances his competitive activities with coaching.

Why IFBB PRO Chose MARBELL GYM

The reason Naoya Amano decided to join MARBELL GYM was not simply "because it was an environment where he could operate as an IFBB PRO."

What resonated most was the philosophy of "building a gym that prioritizes the client."

At MARBELL GYM, we create training programs tailored to each client's body and goals, aiming to guide them to be able to continue exercising independently after their program concludes.

Amano himself deeply sympathizes with the approach of not just aiming to build muscle, but proposing the optimal methods according to the client's life and objectives.

Furthermore, the introduction of multiple professional-grade machines was also a reason for accepting the role of representative trainer.

As a competitive athlete, an environment where diverse machines can be utilized is essential for high-level training.

He also found MARBELL GYM appealing for its environment that allows not only clients but also trainers to continue growing.

Naoya Amano at the 2026 ZeniX Tokyo PRO

"Achieve maximum efficiency faster than mass-produced personal gyms." -- The Personal Training MARBELL GYM Aims For

In recent years, the personal gym market has continued to expand, with many new facilities opening.

However, facilities and services often resemble each other, leading to many voices saying, "I don't know which one to choose."

The concept that MARBELL GYM upholds is:

"Achieve maximum efficiency faster than mass-produced personal gyms."

We prioritize efficient body sculpting by providing optimal training for each individual, rather than simply losing weight in a short period.

This philosophy is embodied in our training environment, which combines "fully private rooms" and "multiple professional machines."

Differences from Typical Personal Gyms

Many typical personal gyms focus their training around a single multi-rack.

While a multi-rack is excellent equipment capable of various exercises like squats, bench presses, and cable training, it can limit the range of training for long-term clients.

In fact, during his previous role in store management, the representative, Terashima, frequently heard comments such as:

"I want to try more varied exercises."

"My body has adapted, so I want to level up."

MARBELL GYM was born from this experience.

To provide training that suits the level and goals of everyone from beginners to competitive athletes, we have introduced multiple professional machines while maintaining fully private rooms.

This was not simply about adding more equipment, but about aiming for an "environment where clients can continue to be engaged and achieve results long-term."

MARBELL GYM Hachioji Branch

Focus on Training with Peace of Mind in Fully Private Rooms

At MARBELL GYM, all sessions are conducted in fully private rooms.

Clients can concentrate on their training at their own pace without worrying about being watched, providing peace of mind for exercise beginners and female clients.

Furthermore, trainers can closely observe clients' movements and form, enabling safer and more efficient guidance.

Personal gyms that combine the security of fully private rooms with professional equipment are still rare nationwide.

MARBELL GYM believes that this environment itself leads to client results.

Training Scene

Reasons MARBELL GYM is Chosen -- Commitment to Service Quality

At MARBELL GYM, we prioritize "service quality that engages with each client long-term" above all else, not just facilities and achievements.

Support Tailored to Each Individual, Achieved Through Dedicated Trainer System

MARBELL GYM generally employs a dedicated trainer system.

Having the same trainer each time allows for continuous monitoring of the client's physical changes, training history, and lifestyle habits, with the menu adjusted according to their condition on the day.

This allows for efficient and high-quality personal training by sharing subtle changes like "I'm still fatigued today," "My form has improved on this exercise compared to last time," or "I seem ready to advance to the next stage," eliminating the need for explanations from scratch each session.

Body sculpting is not something that ends in a few weeks. That's why we are committed to a dedicated system that allows for long-term support built on trust.

Training Scene

Instruction Quality Supervised by IFBB PRO, for All Trainers

MARBELL GYM's strength is not solely in the high coaching ability of its representative trainer, IFBB PRO Naoya Amano.

Amano's training theories, form guidance, and body-sculpting concepts, honed on the world stage, are shared as the overall coaching standard for the gym and reflected in trainer education.

Therefore, even if the assigned trainer changes, we have a system in place to provide services with a unified quality as MARBELL GYM.

Our goal is to provide world-class knowledge in an easily understandable manner not only to competitive athletes but also to general clients aiming for weight loss and health maintenance.

This is what MARBELL GYM considers personal training.

Training Scene

Reasons Chosen by Busy Clients in Their 30s-50s

MARBELL GYM clients primarily range from their 30s to 50s, including many busy business professionals such as company executives and directors.

To achieve efficient results even with limited time, we have created an environment that maximizes the effectiveness of each session through smooth guidance with a fully reservation-based system and continuous management of training content by dedicated trainers.

Additionally, because the rooms are fully private, allowing clients to concentrate on their training without concern for others, it is highly praised by those who find it difficult to go to the gym due to self-consciousness about being seen, and by those who wish to pursue body sculpting in a calm environment.

We aim to be partners who support each client's life, not just provide training. Therefore, we pursue an environment where clients of all levels, from beginners to competitive athletes, can train with peace of mind and for the long term, with a commitment to all aspects: facilities, instruction, customer service, and education.

Personal Training That Considers "After Graduation"

MARBELL GYM's goal is not to have clients continue attending the gym indefinitely.

Our ideal is for clients to become capable of continuing their training independently.

To achieve this, we go beyond simply accumulating sessions and also provide instruction that includes knowledge such as:

・Why this exercise is being performed

・Which muscles are being used

・What to be mindful of in daily life

Our aim is to equip clients with the "ability to continue exercising," not just to build their bodies.

This is the true value that MARBELL GYM seeks to provide.

Courses and Pricing

MARBELL GYM offers multiple plans to suit clients' goals and lifestyles.

Initial Consultation: Free (30 minutes)

Enrollment Fee: ¥11,000 (tax included)

Body Make Intensive Course (Recommended for beginners and those aiming for short-term results)

2 months (16 sessions) ¥219,800 (tax included)

3 months (24 sessions) ¥319,800 (tax included)

4 months (32 sessions) ¥419,800 (tax included)

5 months (40 sessions) ¥499,800 (tax included)

Included Services

・Mineral water ・Online meal guidance & support ・Shoe rental ・Locker rental ・Protein ・Same-day schedule change possible

Ticket Course (Valid for 6 months)

10 sessions ¥94,800 (tax included)

20 sessions ¥184,000 (tax included)

30 sessions ¥264,000 (tax included)

40 sessions ¥339,800 (tax included)

Included Services

・Mineral water

Fixed-Rate Course (50 minutes)

4 sessions/month ¥37,800 (tax included)

8 sessions/month ¥71,800 (tax included)

12 sessions/month ¥101,800 (tax included)

Included Services

・Mineral water

Grand Opening Campaign!

To commemorate the opening of the Mitaka branch, we are holding a limited-time campaign offering a 50% discount on the enrollment fee.

We invite everyone, from exercise beginners to experienced individuals, to experience MARBELL GYM's training during this opportunity.

Free Consultation and Trial Training Available

Before starting training, MARBELL GYM conducts a free consultation to carefully listen to each client's concerns and goals.

https://marbellgym.com/counseling

Please feel free to consult us about any concerns, such as:

"I have no exercise experience."

"I don't know where to start."

"I want to succeed in my diet."

"I want to build muscle."

We will propose the optimal plan after assessing your physical condition and lifestyle.

Consultation Scene

Message from the Representative

Taku Terashima, Representative Director, Marvel Fitness Co., Ltd.

"Aiming to be a Personal Gym Rooted in the Community and Chosen for the Long Term"

The reason for establishing MARBELL GYM was the desire to "create an environment where we can provide services more tailored to each individual client."

Through my experience in store operations and area management within the personal gym industry, I have interacted with many clients.

From this experience, I realized the importance of providing an "environment where people can continue exercising long-term," not just achieving short-term results.

Many typical personal gyms operate with limited equipment.

While it's possible to change one's body, we increasingly received requests from long-term clients saying, "I want to try a wider range of training" or "I want to level up."

To solve this problem, MARBELL GYM has introduced multiple professional machines while maintaining fully private rooms, creating an environment that can accommodate a wide range of individuals from beginners to competitive athletes.

Expanding facilities is not the sole objective.

MARBELL GYM is the result of creating the necessary environment to provide the optimal training for each client.

First, 10 Locations. Towards a Brand Needed by the Community.

Our goal is to expand to 10 locations initially.

Increasing the number of stores is not the only objective.

Our goal is to establish roots in each community and increase the number of stores that people say, "It's great that MARBELL GYM is in this town."

And to make fitness a culture that everyone can incorporate into their daily lives, not something special.

MARBELL GYM will continue to challenge itself to become a brand that contributes to the local community through health.

Taku Terashima, Representative of Marvel Fitness Co., Ltd.

Naoya Amano, IFBB PRO, Representative Trainer of MARBELL GYM

I am currently continuing my challenge in world championships as an IFBB PRO.

While pursuing my competitive activities, I developed a desire to "share the knowledge and experience I've gained globally with more people."

MARBELL GYM felt like the place where I could realize that desire.

Through my discussions with Representative Terashima, I strongly felt his "client-first" approach.

At MARBELL GYM, we create programs tailored to each individual's body and goals, and emphasize enabling clients to continue exercising independently after their program concludes.

Deeply resonating with this philosophy, I decided to participate as the representative trainer.

While I myself am a competitor challenging world championships, the training I provide to clients is not exclusive to competitive athletes.

I place the utmost importance on providing optimal training for each individual, whether they are new to exercise, looking to start a diet, or aiming for health maintenance.

Body sculpting is not about comparing yourself to others.

I believe our role as trainers is to walk alongside each person, supporting them in taking the optimal steps towards their individual goals.

Naoya Amano, Representative Trainer of MARBELL GYM

MARBELL GYM Store List

Store Name: MARBELL GYM Hachioji Branch

Location: Stock Hachioji 202, 4-1-2 Myojincho, Hachioji-shi, Tokyo

Access: 8-minute walk from JR Chuo Line "Hachioji Station", 2-minute walk from Keio Line "Keio-Hachioji Station"

Business Hours: 8:00 AM - 10:00 PM

Official HP: https://marbellgym.com/hachioji

Store Name: MARBELL GYM Mitaka Branch

Location: 3F, J's Building, 1-4-10 Nishikubo, Musashino-shi, Tokyo

Access: 4-minute walk from JR Chuo Line/Sobu Line "Mitaka Station"

Business Hours: 8:00 AM - 10:00 PM

Official HP: https://marbellgym.com/mitaka

Company Profile

Company Name: Marvel Fitness Co., Ltd.

Representative: Taku Terashima

Business Activities: Personal gym operation, fitness business

Brand Name: MARBELL GYM

[Official Website]

https://marbellgym.com

[Inquiries]

Please contact us through the official website.

FACT BOX

  • Source: PR TIMES
  • Category: ビジネス
  • Organizations: MARBELL GYM / IFBB PRO