About Us
We are a licensed detective agency committed to sincerely addressing our clients' need for answers. We operate in full compliance with applicable laws, maintain strict confidentiality, and provide reliable evidence to support our clients' needs.
Message from the Founder and Co-Representative
My name is Muneyoshi Yamamoto, Representative of Trust Research.
Over the years, I have witnessed a wide range of human relationships and social realities. These experiences have reaffirmed a simple yet profound truth: while trust in others is fundamentally important, human desires and actions can sometimes lead to outcomes beyond logic and expectation.
Ultimately, the only person who can truly protect you is yourself. When doubt turns into confusion, it can lead to misjudgment and further complications. In many cases, it is the truth that becomes the most reliable form of protection.
“Truth is stranger than fiction.”
At Trust Research, we are committed to providing that truth to those who seek it, helping to illuminate a clearer and more certain path forward. We see ourselves as a final line of support for our clients, and we approach our responsibilities with full dedication and resolve.
With sincerity and determination, we will continue to fulfill our mission.
Career SummaryMuneyoshi Yamamoto
- Born on May 11, 1986, in Urawa, Saitama, Japan.
- After graduating from high school, he worked in Roppongi as a VIP manager at a nightclub, gaining extensive experience in client relations and service management.
- At the age of 27, he founded companies in the telecommunications and investigative services industries.
- At 35, he was appointed President of the major entertainment agency “Yellow Cab,” where he led the industry’s first nationwide franchise expansion in the entertainment sector.
- He later founded an advertising agency before establishing Trust Research, a licensed detective agency.
My name is Yuichi Nakai, Co-Representative of Trust Research.
Detective work is a profession that deals with critical facts that can significantly impact the lives of individuals and the future of businesses. For this reason, what is required of us is not speculation or assumption, but accurate and reliable evidence.
The truth can sometimes be difficult to face. However, making decisions without knowing the facts can lead to even greater regret.
Our mission is to gather facts on behalf of our clients and present them with clarity and precision. By remaining objective and not being swayed by emotions, we believe we can help protect our clients’ future through a steady commitment to truth and accuracy.
“Do not search for answers. Gather the facts.”
Guided by this philosophy, we approach every investigation with sincerity, responsibility, and unwavering dedication.
Career SummaryYuichi Nakai
- Born on July 20, 1990, in Nagoya, Aichi, Japan.
- After leaving high school, he began his career in the retail and apparel industry, working in customer service and sales at major department stores.
- He later became independent as a freelance sales professional, working across multiple industries and gaining practical experience in marketing and client relations.
- In 2026, he joined Trust Research and was appointed Co-Representative.
Our Three Commitments
Strict Confidentiality
We ensure that all consultations and investigation details are never disclosed to any third party. We strictly uphold confidentiality obligations at all times.
Legal Compliance
We comply with the Detective Business Act and all applicable laws and regulations, and conduct all investigations strictly within legal boundaries.
Transparent Pricing
We clearly present all costs in writing before the investigation begins. We never issue any additional charges without prior agreement.
Company Profile
| Company Name | Trust Research Detective Agency |
|---|---|
| Representative | Muneyoshi Yamamoto |
| Co-Representative | Yuichi Nakai |
| Detective Business License No. | Tokyo Metropolitan Public Safety Commission No. 30260134 |
| Established | June 9, 2023 |
| Location | 8F BIZMARKS Building, 8-2 Nihonbashi Koamicho, Chuo-ku, Tokyo 103-0016, Japan |
| Phone | +81-3-6555-3414 |
| info@trust-research.jp | |
| Hours | 24/7 (Open year-round) |
| Services | Investigation Services (Infidelity, Missing Persons, Background Checks, Corporate Investigations, Asset Tracing, and Harassment Cases) |
Feel Free to Contact Us First
No matter how small your concern may be, you are welcome to reach out. Consultations are free of charge, strictly confidential, and available 24/7.
Contact Us for Free Consultation