SPLASH

English inquiries about investigations in Japan

Infidelity investigations in Japan: inquire in English

You can contact SPLASH in English about a spouse or partner whose relevant activity is in Japan. We review the purpose, location and lawful scope before discussing an infidelity investigation, an estimate or an agreement. Field investigations are limited to Japan; we do not undertake overseas fieldwork.

Submitting the form does not start an investigation or commit you to a service.

Tokyo-based operator
Notification No. 45200077
Human-reviewed replies
A person calmly reviewing a private concern before making an inquiry
Start with what you directly observed. A change in routine alone does not prove infidelity.

Immediate danger in Japan? This website is not an emergency service. Call 110 or contact local police. For a non-urgent police consultation, call #9110 in Japan.

Lawful scope

Infidelity investigation inquiries: scope and limits

A first inquiry checks purpose, location and lawful scope. It is not a promise that an investigation can be accepted.

Requests we can review

  • A non-urgent concern about a spouse or partner whose relevant activity may connect to Japan.
  • Whether a limited, lawful fact-finding plan may be appropriate.
  • How dates, places, direct observations and unknowns should be organized.
  • Questions about scope, estimate conditions, reporting and written terms.

Requests we cannot accept

  • Stalking, harassment, discrimination, threats or retaliation.
  • Unauthorized access to devices, accounts, messages or restricted records.
  • Trespass, wiretapping or unauthorized GPS installation.
  • Locating a person escaping abuse or a request that may create immediate danger.

Verified operator information

Who operates SPLASH

These details match the company's currently published Japanese company and legal pages.

Operator
DETEcle Co., Ltd.
Service
SPLASH Detective Agency
Representative director
Takamichi Shibata
Investigation practice supervisor
Hiroyuki Konno
Detective business notification
No. 45200077, Tokyo Metropolitan Public Safety Commission
Published office address
Win Aoyama 942, 2-2-15 Minami-Aoyama, Minato City, Tokyo 107-0062, Japan
What the notification means: it confirms the required filing under Japan's detective business law. It is not a government endorsement, a special investigative power or a guarantee of results.

Before any investigation

From your first question to a possible report

Each stage is separate. Sending the form completes only the first stage.

Brief inquiry

Describe the purpose and Japan connection without naming a third party.

Scope review

We review whether the purpose and proposed activity can be considered lawfully.

Information check

If appropriate, the operator explains what additional information and identity checks may be required.

Written estimate

Scope, expected total, inclusions, possible extras and cancellation terms are set out before a decision.

Written terms before an investigation

No investigation begins until required explanations and written terms are completed.

Investigation and report

Only agreed lawful work is performed. Report and communication conditions follow the written agreement.

Estimate transparency

What may affect the total cost

No price is quoted here because the required work has not been assessed. Ask for a written estimate before deciding.

A website inquiry is not an order

Submitting the form does not create a contract, authorize paid work or confirm that a request can be accepted.

Do not rely on a headline price without checking its conditions.

Ask the written estimate to show

  • Purpose and included work
  • Locations and working hours
  • Number of investigators
  • Travel and equipment
  • Report format
  • Taxes and payment timing
  • Additional-work approval
  • Pause and cancellation terms

Illustrative inquiry scenarios

How to frame a first question

These are educational examples, not client cases, testimonials or evidence of past results. No real case records are used.

Illustrative only

A partner travels to Japan more frequently

Useful first question
“My partner has been travelling to Japan more often. I do not know the reason. Is this type of concern within your scope?”
What not to send yet
Names, addresses, passport details, account credentials, private photographs or copied messages.
What remains uncertain
A travel pattern alone does not establish infidelity or justify an investigation.
Illustrative only

A timeline includes activity in Japan

Useful first question
“Part of my concern relates to specific dates in Japan. What information is needed to check whether a lawful scope can be discussed?”
What to organize
Dates, time zones, places, direct observations and assumptions.
Safety limit
Do not access another person's device or account to fill gaps.
Publication policy: a real client example will be published only after its source, permission and anonymization have been verified. Past examples will never guarantee a similar result.

Frequently asked questions

Questions to resolve before you decide

Can I contact SPLASH from outside Japan?

You may use this form to ask about a possible investigation connected to Japan. Acceptance, location and contract conditions are reviewed separately. Field investigations are limited to Japan; overseas fieldwork is not available.

Does submitting the form start an investigation?

No. It does not create a contract, authorize paid work or guarantee acceptance.

Can I write in my preferred language?

Yes. The initial message may be machine-translated into Japanese. A human reviews a translated reply before it is sent. Contract and report language options must be confirmed separately.

What should I include?

State the general purpose, the Japan connection, what you directly observed and what you want to clarify. Keep the message non-identifying.

What should I leave out?

Do not include a third party's name, address, identity document, password, account information, private image or sensitive evidence.

Can I attach files?

No. This initial form does not accept attachments. Ask how information should be provided before sending documents or images.

How is the estimated total calculated?

Possible factors include purpose, location, staffing, working hours, travel, equipment and reporting requirements. Request a written estimate.

Can you guarantee evidence or a result?

No. SPLASH does not guarantee that infidelity exists, that particular evidence will be obtained or that a court will assign a particular evidentiary value.

How quickly will I receive a reply?

No response time is promised here. Do not use this form for an emergency.

How are messages and translations handled?

The inquiry is sent to the operator by email and may be delivered through LINE notification services. It may be machine-translated for review.

Non-urgent inquiry

Ask a question in your language

Only the fields marked required are needed. The operator reviews scope before discussing terms or a possible engagement.

Send an inquiry

Only the fields marked required are needed. Do not include another person's name, address, identity document, passwords, or private images in your first message. Attachments are not accepted.

20–3,000 characters. Please keep your first message non-identifying.

Privacy notice for this form

Operator: DETEcle Co., Ltd. We collect your email address, preferred reply language, and message to assess and respond to your inquiry, and to keep necessary records. The message may be machine-translated into Japanese and delivered to the operator through email and LINE services. A human must review any translated reply before it is sent to you. Please do not send sensitive case evidence or details about third parties through this initial form.

Read the full English privacy information for purposes, service-provider handling, retention, access and deletion requests. The Japanese legal information remains the operator's published legal source.

Non-urgent question
No commitment to hire

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