Documenting a Genuine Relationship for ISA

Prove-marriage-to-immigration files succeed on one question: is this marriage lived, not just registered.¹ The registry checklist proves the marriage exists; the evidence file proves it is genuine, and ISA runs that second examination on every spouse filing.²¹

Confirm current details with official sources

Procedures, fees, and requirements can change. Confirm current details at the Immigration Services Agency site. This article is general information, not legal or immigration advice; for your specific case, consult a licensed gyoseishoshi for an evidence-file read, or an immigration lawyer for a rejection or a sham-marriage allegation.

Last verified: 2026-09.

Overview

Every spouse-status application and renewal carries a genuineness read alongside the paper checklist.¹ ISA weighs registry proof, time-spanning contact, shared household life, and both partners' accounts together; no single exhibit carries the file alone.¹ The categories below are practitioner-distilled examination practice, not one ISA-published checklist, while ISA publishes the per-status required documents separately.²¹

Why ISA scrutinizes every marriage file

Documented sham-marriage enforcement history motivates the toolkit: separate interviews of both partners, communication-record review, cohabitation evidence review, and occasional home checks.¹ Files with short courtships, large age gaps, no shared language, or serial sponsorship draw deeper verification than settled cohabiting files.¹

The evidence ISA expects, category by category

Assemble all six categories; a file strong on registry proof but silent on daily life reads as paper only.¹

Category	What to include	Notes
Registry proof	Koseki tohon showing the marriage entry; apostilled or legalized certificate with Japanese translation for foreign-foreign cases	ISA-published required documents; translate everything23
Time-spanning photos	From before registration through recent daily life, with family-introduction frames	Continuity across years matters more than wedding-day volume1
Message history	Printouts showing continuous contact across the relationship	Gaps need explaining, not hiding1
Joint finances	Shared rent, joint account, remittance or bill trails	Shared livelihood is the renewal core1
Both-partner story	Each partner's account of meeting, courtship, registration decision, daily life	Consistent independently, not identically1
Household presence	Lease, mail, utility records at the shared address	The paper shadow of cohabitation1

The table reflects examination practice described by professionals as of 2026-09; confirm current document lists with ISA. Where ISA issues its examination questionnaire (質問書, shitsumonsho), answer precisely and consistently rather than expansively.¹

Write two stories, not one story twice

Examiners compare independently written accounts for lived detail, not matching sentences. Identical phrasing reads as coached; separate memories of the same events read as real.¹

The cohabitation expectation

A shared address is the default read of a lived marriage.¹ Living apart from the start contradicts the status purpose, so justified separation needs its own paper: transfer orders, school enrollment, medical records, plus visit and call logs bridging the gap.¹

Rejection patterns: what kills your application

Refusal letters typically cite failure to evidence a genuine ongoing marital life, thin or contradictory contact records, or unexplained separation.¹ Contradictions between partners' interview answers are a classic refusal trigger; rehearse facts, not scripts.¹ Prior sham indicators, such as paid-arrangement evidence or broker involvement, end the file and can draw criminal referral under the Act.⁴¹

What kills your application or renewal:

• Contradictory interviews. Partners disagreeing on basic household facts sinks credibility faster than any missing photo.¹
• Unexplained separation. Distance with no paper reads as distance in the marriage.¹
• A manufactured paper trail. Exhibits created after a document request carry little weight and invite deeper checks.¹

Long-distance courtships: closing the paper gap

Substitute visit logs with passport stamps, boarding passes, and dated photos per visit, plus call histories and family-meeting records.¹ Add a concrete cohabitation plan after landing, with a lease or move-in date, to answer the forward-looking question examiners always ask.¹

Good to know

Start the paper trail before you file, not after a document request

Retroactive exhibits read as manufactured. Photograph, save, and file continuously from the courtship onward.¹

Translate and certify every foreign-language exhibit

Uncertified translations stall examination and invite re-requests. Budget translation time into the filing schedule, not around it.²

Keep renewing the file between filings, not just at filing time

Renewal re-runs the genuineness read on the intervening years. A file maintained continuously renews quietly; one rebuilt at deadline renews loudly.¹

See also

• Spouse Visa Application After Marriage Registration
• Marriage to a Japanese National
• Koseki: Japan's Family Register Explained
• How to Request Koseki and Juminhyo Copies
• Spouse or Child of a Japanese National
• Spouse or Child of a Permanent Resident

References

Footnotes

1. ACROSEED. "Spouse Visa Japan: Period of Stay (1/3/5 Years)." https://english.visajapan.jp/qa/qa_spouse7.html ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸ ↩¹⁹ ↩²⁰ ↩²¹ ↩²² ↩²³ ↩²⁴ ↩²⁵ ↩²⁶ ↩²⁷

2. Ministry of Foreign Affairs of Japan. "Specified visa: Spouse or child of Japanese national." https://www.mofa.go.jp/j_info/visit/visa/long/visa10.html ↩ ↩² ↩³ ↩⁴

3. 出入国在留管理庁. 「在留手続案内」 (Procedures for Entry/Residence). https://www.moj.go.jp/isa/content/001453431.pdf ↩

4. e-Gov法令検索. 「出入国管理及び難民認定法」. https://laws.e-gov.go.jp/law/326CO0000000319 ↩