diff --git a/messages/ja.json b/messages/ja.json
index 0eda6954..7c343c04 100644
--- a/messages/ja.json
+++ b/messages/ja.json
@@ -261,7 +261,7 @@
 	"auth_company_name_placeholder": "Acme Corp",
 	"auth_required_agreements_label": "必須同意事項 *",
 	"auth_agree_to": "",
-	"auth_terms_of_service": "利用規約に同意する",
+	"auth_terms_of_service": "クッキーポリシーに同意する",
 	"auth_privacy_policy": "プライバシーポリシーに同意する",
 	"auth_cookie_policy": "Cookie ポリシーに同意する",
 	"auth_eula": "エンドユーザー使用許諾契約に同意する",
diff --git a/src/lib/components/auth/LegalConsentFields.svelte b/src/lib/components/auth/LegalConsentFields.svelte
index 342e72b4..b90508b5 100644
--- a/src/lib/components/auth/LegalConsentFields.svelte
+++ b/src/lib/components/auth/LegalConsentFields.svelte
@@ -1,5 +1,6 @@
 <script lang="ts">
 	import { m } from '$lib/paraglide/messages.js';
+	import { legalDocumentUrl } from '$lib/i18n/legal-urls';
 
 	interface Props {
 		agreedPrivacy: boolean;
@@ -16,9 +17,9 @@
 		agreedTerms = $bindable(false),
 		agreedEula = $bindable(false),
 		allConsentsGiven,
-		privacyUrl = 'https://www.cropwatch.io/legal/privacy-policy',
-		termsUrl = 'https://www.cropwatch.io/legal/terms-of-service',
-		eulaUrl = 'https://www.cropwatch.io/legal/EULA'
+		privacyUrl = legalDocumentUrl('privacy_policy'),
+		termsUrl = legalDocumentUrl('terms_of_service'),
+		eulaUrl = legalDocumentUrl('eula')
 	}: Props = $props();
 
 	// The matching checkbox stays disabled until its policy link has been opened.
diff --git a/src/lib/i18n/legal-urls.spec.ts b/src/lib/i18n/legal-urls.spec.ts
new file mode 100644
index 00000000..5382793c
--- /dev/null
+++ b/src/lib/i18n/legal-urls.spec.ts
@@ -0,0 +1,24 @@
+import { describe, expect, it } from 'vitest';
+import { legalDocumentUrl } from './legal-urls';
+
+describe('legalDocumentUrl', () => {
+	it('links English users to the global site', () => {
+		expect(legalDocumentUrl('privacy_policy', 'en')).toBe(
+			'https://www.cropwatch.io/legal/privacy-policy'
+		);
+		expect(legalDocumentUrl('terms_of_service', 'en')).toBe(
+			'https://www.cropwatch.io/legal/terms-of-service'
+		);
+		expect(legalDocumentUrl('eula', 'en')).toBe('https://www.cropwatch.io/legal/EULA');
+	});
+
+	it('links Japanese users directly to the Japanese site so the geo redirect cannot drop the path', () => {
+		expect(legalDocumentUrl('privacy_policy', 'ja')).toBe(
+			'https://cropwatch.co.jp/legal/privacy-policy'
+		);
+		expect(legalDocumentUrl('terms_of_service', 'ja')).toBe(
+			'https://cropwatch.co.jp/legal/terms-of-service'
+		);
+		expect(legalDocumentUrl('eula', 'ja')).toBe('https://cropwatch.co.jp/legal/EULA');
+	});
+});
diff --git a/src/lib/i18n/legal-urls.ts b/src/lib/i18n/legal-urls.ts
new file mode 100644
index 00000000..0a16ae9d
--- /dev/null
+++ b/src/lib/i18n/legal-urls.ts
@@ -0,0 +1,26 @@
+import type { LegalDocumentKind } from '$lib/api/api.dtos';
+import { getLocale } from '$lib/paraglide/runtime';
+import { getUiLocale } from './format';
+
+// Canonical hosts: cropwatch.io redirects to www, cropwatch.co.jp redirects www away.
+const LEGAL_SITE_ORIGIN = {
+	en: 'https://www.cropwatch.io',
+	ja: 'https://cropwatch.co.jp'
+} as const;
+
+const LEGAL_DOCUMENT_PATH: Record<LegalDocumentKind, string> = {
+	privacy_policy: '/legal/privacy-policy',
+	terms_of_service: '/legal/terms-of-service',
+	eula: '/legal/EULA'
+};
+
+/**
+ * Public URL of a legal document on the marketing site that matches the UI locale.
+ *
+ * cropwatch.io geo-redirects visitors in Japan to the cropwatch.co.jp *home page*
+ * (the path is dropped), so Japanese-locale users must be linked straight to
+ * cropwatch.co.jp to land on the document they are agreeing to.
+ */
+export function legalDocumentUrl(kind: LegalDocumentKind, locale = getLocale()): string {
+	return `${LEGAL_SITE_ORIGIN[getUiLocale(locale)]}${LEGAL_DOCUMENT_PATH[kind]}`;
+}