1. Pre Matrimonial Investigation Services
Strong relationships are built on trust, and verifying important details before commitment can provide peace of mind. Our pre-marital background verification and partner screening services help individuals and families obtain reliable information before making important decisions.
We will verify:
- Criminal records (if any).
- Previous associations and love affairs (If Any).
- Family background and general reputation assessment.
- Job, salary, office, and Designation.
- Bad Habits like smoking, alcoholic, abuser, or gambler.
“Knowing the truth before marriage can help prevent a lifetime of regret later.”
2. Post-Marriage Investigation Services
Unexpected changes in a partner’s behavior, such as staying out late, hiding phone conversations, emotional withdrawal, or unusual financial activity, can raise serious concerns. During such times, individuals often look for trustworthy information and factual evidence to gain clarity.
As a trusted private detective agency, we offer confidential post-marital investigation services that help you understand sensitive situations with clarity and authentic information.
Our investigators treat every matrimonial case with careful attention and strict confidentiality. Understanding the delicate nature of personal situations, we conduct each investigation with professionalism, discretion, and complete respect for the client’s privacy.
- Monitoring unusual or inconsistent behaviour patterns.
- Professional surveillance services (where appropriate and responsibly conducted).
- Investigation of potential extramarital involvement.
- Verification of financial secrecy or hidden transactions.
- Discreet background checks on unknown associations.
Our work is not to create conflict, but to provide you clarity. With factual information, you can make decisions with confidence and peace of mind.
If you are looking for a trusted private detective for matrimonial or post-marital concerns, We are here to assist you through a private and confidential consultation.
You’ll be shown real-time evidences (videos/pics) to make an informed decision at the end.
3. Physical Surveillance Services
Our private investigators in Japan conduct surveillance operations with strict confidentiality and careful planning. Every investigation is conducted responsibly to obtain trustworthy information while respecting legal and ethical standards.
We silently observe the targeted person to gather all the evidences.
- Whom they meet where they go.
- Day & night movement tracking.
- Photos, videos, vehicle numbers.
These investigations are conducted with discreetly and ethically by our experienced professional investigators.
Relationship & Loyalty Test Investigation Service
When doubt begins to replace trust, finding clear answers becomes essential. If you feel your partner may be hiding something, our professional relationship investigation services offer confidential support to help reveal the truth.
- Know if your spouse if he/she is loyal to you or not?
- Recognize flirting, cheating, or lying to you.
- Collect emotional and visual evidence.
“Accepting the truth is not always easy, but continuing in doubt can cause far greater pain.”
5. Cyber Crime & Digital Fraud Investigation
In today’s digital age, risks and threats can appear directly on your laptop or smartphone without any warning.
We handle:
- Online harassment, blackmail, or intimidation.
- Email or social media hacking.
- Cyberstalking or fake profiles.
- Identity theft or financial fraud.
We combine today’s technology with our investigation techniques to identify and track cyber criminals.
7. Background Verification Service.
As a professional private investigation agency, we conduct detailed background verification for individuals, corporate clients, and legal professionals. The process may involve checking employment records, reviewing financial details, evaluating reputation, and examining important associations. Every investigation is carried out with care, professionalism, and complete confidentiality.
Our vast network of investigators across Japan and legal tools help us find proofs.
Why people trust us as the most reliable detective agency in Japan
- 100% Confidentiality Guaranteed
For us your privacy is our top priority, your identity and case details will stay only with us. Never to be disclosed to anyone under any circumstances.
You’ll get a complete investigation report with accompanying videos, images, and timeline report to guide your decision-making.
Typically it’ll take us 2 to 7 days for the average personal investigation process. You will be informed at every stage.
Affordable Private Detective Charges
Investigation Service Package rates begin at just ¥5,000, No hidden charges.
- Experienced Team of Private investigators in Japan
– Our investigation team in Japan includes experienced private detectives, former law enforcement professionals, and cybersecurity specialists. With the support of both male and female investigators, we are capable of handling various types of investigations with discretion and professionalism.
– We understand in how much pain and stress you are going through. We listen carefully to your concerns without any judgment.
Licensed Investigators – Lawful Evidence, Real Results.
Each case is managed with proper planning and attention to detail by our detectives in Japan. We follow legal investigation practices, safeguard confidential information and ensure transparent communication with clients during the entire process.
Transparency is important to us from the start. Before any investigation begins, we explain what can responsibly be carried out within professional and legal limits. Clients are given a clear overview of the investigation process, the type of evidence that may be collected, and how the findings may be used. This approach is particularly useful for international clients handling matters in Japan from overseas.
The Importance of Professional Investigation Standards in Japan.
Working with an unlicensed agency in Japan can cause you more harm than good. Evidence gathered through improper methods may not hold value and may even create legal complications. This is why choosing a professional and legally compliant detective agency is an important step for protecting your interests.
When you choose our services, you partner with professional investigators who operate in accordance with Japanese laws, protect client privacy, and provide accurate, well-documented findings. Whether the matter involves personal situations, corporate concerns, or possible legal issues, your case is managed with professionalism and care.
How we Helped a Client in Japan.
At GAMSI Detective Agency, our work is more than just completing a task. Every case represents someone’s trust, emotions and future. Clients come to us during their difficult times, with unanswered questions, doubts and concerns that affect important life decisions. We understand it as a responsibility and a privilege to help them with clarity, truth and peace of mind through our structured and professional investigation services.
Below is a story of one of our clients in Japan whose situation changed after seeking our investigative support.
Yuki approached our investigation team after noticing sudden changes in her husband’s behavior. He frequently returned home late, became secretive about his phone, and often claimed to be busy with unexpected work commitments.
Our investigators conducted discreet surveillance over several days while documenting movements and interactions carefully. The investigation revealed that her husband had been meeting another woman regularly after work hours.
All findings were compiled into a confidential report and shared with the client. With verified information available, Yuki was able to clearly understand the situation and decide her next steps with confidence.
– Yuki (Tokyo,Japan)
Please Note: The testimonial we shared above has been mentioned with the client’s official consent. At GAMSI Detective agency, we strictly respect and protect the privacy of our every client. Your trust and privacy are our top priority.
