Sengoku Ukiyo Privacy Policy

1. Who handles your data

This Policy applies to Sengoku Ukiyo (the “App”), developed by WayneSan. Contact: WayneSan ／ waynemvrs@gmail.com.

It explains how the App collects, processes, uses, and retains information. Mandatory data-protection rules in your location are not excluded by this Policy.

2. Information we process

Account and sign-in: If you sign in with Google or Apple, Supabase authentication processes your email address, display name, sign-in provider, and user ID. Guest play does not require a password, and we do not obtain your Google or Apple password.

Game and conversation data: To provide cross-device progress, free-life gameplay, relationships, quests, conversation memories, and duplicate-grant prevention, we may process save IDs, progress, relationship data, quest events, text you enter or that is recognized from speech, character responses, and necessary conversation records.

AI conversation data: To generate character responses, we may send your input, necessary conversation context, character or relationship state, conversation memories, and generated responses to Google Gemini or another third-party AI model service. Do not enter identity numbers, passwords, bank details, health or sexual information, trade secrets, or personal information about another person; if you enter it yourself, it may be processed as conversation data.

Voice and microphone: The microphone is optional. Speech recognition may occur on your device; depending on the feature path, audio portions may also be sent to a speech or AI service for processing. Raw audio is not intended to be a long-term game record, and we do not retain raw audio as a purpose of the service.

Purchases and Fate Points: If you buy Fate Points or other items, the platform and the App may process product ID, platform, transaction ID, receipt or verification data, account ID, device ID, and grant result for transaction verification, granting, refund disputes, and duplicate-grant prevention. We do not directly process your full card or bank-account details.

Technical, security, and stability data: We may process IP address, device ID, save ID, operating system, App version, language, App Check or device-integrity result, request time, errors, crash reports, and usage events. Firebase Analytics and Crashlytics may process device and usage data under their service settings.

3. Purposes

To provide sign-in, save synchronization, game content, character conversations, AI responses, voice features, Fate Point and item grants, and account deletion.

To verify transactions, keep account and game data consistent, and prevent cheating, abuse, attacks, duplicate requests, and improper refunds.

To deliver game assets, improve performance and content quality, diagnose errors, keep the service secure and stable, and meet legal, platform, or dispute-handling obligations.

To generate AI responses, prevent abuse, apply safety controls, investigate errors, and maintain service quality. Unless separately disclosed with an appropriate legal basis, we do not use conversation content as advertising or marketing-targeting data.

4. Third-party services and international processing

The App may use Supabase (authentication, database, and backend APIs), Google Gemini and similar generative AI (character responses), Firebase Analytics／Crashlytics／App Check (analytics, crash reporting, and device integrity), Google／Apple sign-in, Apple App Store, Google Play, Cloudflare, and operating-system voice services. Each service has its own terms and privacy policy.

Information sent to third-party AI providers is generally limited to the input, context, and results necessary to generate responses, provide the feature, prevent abuse, or maintain safety. However, a provider may apply its plan, terms, global processing architecture, and legal obligations to keep safety logs, detect abuse, or retain information for a limited period. Until we verify the applicable plan and contract, we do not promise that a third-party AI provider never logs, never permits human review, or never uses data to improve its service.

To provide these features, information may be stored, transferred, or processed in countries or regions where service providers operate, including locations outside yours. We share information only as necessary for service delivery, security, transactions, or law, and we do not sell your personal data.

5. Retention

Account, cloud-save, relationship, quest, conversation-memory, and transaction information is retained for as long as needed to provide the service, handle disputes, prevent abuse, or meet legal obligations. The period varies by data type, service needs, law, and backup cycles.

Without sign-in, some settings, saves, and recent conversations remain on your device. Deleting the App, using the in-game reset function, or clearing device data may remove local data, but does not automatically delete existing cloud data.

Prompts, context, and responses sent to a third-party AI provider are handled under that provider’s and our selected plan’s retention, security, and legal-compliance rules. We will require deletion or de-identification after the necessary purpose ends where our contract permits, but cannot guarantee that a provider’s backups, legally required records, or safety logs disappear immediately. Where Taiwan rules apply, account and individual game-history records are retained for at least thirty days as required by law.

6. Access, correction, deletion, and restriction

You can use the in-App account deletion function to delete cloud account data that the App can delete. You may also email waynemvrs@gmail.com to request access, a copy, correction, supplementation, deletion, restriction of processing, or cessation of use.

We may request reasonable identity verification to protect your account. Some information may be retained for transaction records, legal obligations, security, disputes, or backups, and deleted or de-identified when the necessary period ends.

After receiving a deletion request, we will delete or de-identify the account, cloud saves, conversation memories, and related AI-derived data that we control and applicable law permits us to delete, and will reasonably request the same from service providers acting for us. Security, transaction, or backup information retained by a third party under law may remain until its retention period ends.

7. Permissions and your choices

Microphone permission is needed only for voice features. You can refuse it or turn it off in device settings and use text or another available method. Google／Apple sign-in is optional, but without it you may not have cross-device sync or account-required purchase features.

If your device or platform provides analytics, personalization, or notification controls, you can manage them there. Disabling a permission may disable the related feature but does not affect other game features that do not need it.

8. Children and minors

The App is not primarily directed to children. Because of the terms and safety requirements of the AI service provider currently used by the App, AI conversations and related online-account services are limited to people aged 18 or older; people under 18 may not use those features. Use the Game according to the age rating shown by the store, the Game, and the rules where you are located. If we learn that a person under 18 is using the AI service, we will restrict, suspend, or delete the related account and data as required by applicable law and platform rules. A legal representative who believes a minor provided information should contact us.

9. Security and incidents

We use reasonable technical and organizational measures, including encrypted connections, protected sign-in storage, access controls, server permissions, and App Check or device-integrity mechanisms, to reduce unauthorized access, alteration, loss, or disclosure. No internet service can guarantee absolute security.

If a personal-data security incident requires notice under applicable law, we will take containment, investigation, remediation, and notification measures required by that law.

10. Changes and contact

We may update this Policy when game features, third-party services, law, or security measures change. The latest version and update date will appear on this page and in the App. Material changes will be announced by reasonable means.

Contact: WayneSan ／ waynemvrs@gmail.com.