Myriad
This page is a translation for reference only. The Simplified Chinese version prevails.
Myriad Privacy Policy (Beta)
Effective date: 2026-11-15 Version: 2026-11-15-beta4
Beta Highlights (Read This First)
- Image posting is not available during the beta. When it becomes available later, we will notify you separately and obtain your consent separately.
- Your chat text will be sent to the official DeepSeek API to generate replies; the servers are in China (Hangzhou DeepSeek). What is sent is the content needed to generate replies: character settings, memories relevant to this reply, and recent conversation; it will include your chat app nickname and game name (so the character can address you), and will not include your email or SteamID.
- DeepSeek's own privacy policy (2026-02-10 version) states that data is stored in China, that the retention period is "the period necessary to provide the services," and lists model training as a purpose. We have not obtained written assurances from DeepSeek regarding these matters; please assume that your chat content may be stored and may be used for training. Please do not say anything in chat that you do not want stored. We ourselves will not use your conversations to train models.
- China's personal information protection regime differs from Japan's; government authorities may, under circumstances provided by Chinese law, require it to provide data. Before you first use the service, we obtain your explicit consent via a separate checkbox; you may withdraw at any time, and after withdrawal you will be unable to continue using the chat function.
- This service is limited to those aged 16 and over; the characters are AI, not real people (each character profile page bears an AI label).
1. Who We Are
Myriad (hereinafter "the Service") is operated by Studio Bansho (hereinafter "we"). We are a sole proprietor conducting business in Japan.
- Contact: [email protected]
- Address: The business location is not disclosed during the beta; if you need to contact us, please email the address above; the business location will be announced separately before paid features open
The Service includes: a web chat app (mobile and desktop browsers) and a game distributed on Steam. Both use the same account. During the beta, only the web chat app is provided.
2. Nature of the Service
The characters in the Service generate dialogue and actions via AI (artificial intelligence), and they are not real people. So that the characters can "live" even when you are absent, remember you, and contact you proactively, your interactions with the characters are processed on our servers and sent to the AI model provider listed in Section 5 (official DeepSeek) to generate replies.
3. What Information We Collect
| Category | Content | Source |
|---|---|---|
| Account information | Account ID, game name and chat app nickname (when you first log in to the web with a new Steam account, these two fields appear on one page, both required, and you can enter only after filling them in; there are no default values; the character calls you by your chat app nickname in chat; both can be changed at any time afterward); neither contains any part of your SteamID, avatar, time zone, or personal settings; your SteamID when logging in with Steam (a 64-bit public ID, told to us by Valve during login verification); the beta code you use | You provide |
| Age confirmation | The record that you checked "I am 16 or older," the time of confirmation, and the version of the terms you agreed to (we do not collect your date of birth) | You provide |
| Chat content | Messages you send to characters, messages characters send to you | You and the Service |
| Processed memories | Facts the characters organize from conversations, diaries, a small amount of verbatim text; relationship values; characters' emotional and personality states; events in the world | Generated by the Service based on chat content |
| Cards you write | Character cards and world cards you import or create (including images) | You provide |
| Payment information | Paid features are not available during the beta; after they open: records of the issuance, acquisition, and use of in-game currency (credits) and points, and purchase records (Steam order number, product, amount, time) | Steam; the Service |
| Reports and violation records | Reported messages and 10 messages of context before and after, and handling results; violation records | Reports by you or other players; automated detection by the Service |
| Bring-your-own API Key (if you choose to upload) | Your model provider Key (stored encrypted), last 4 digits, usage | You provide |
| Push subscription | Your device's push address and keys | Your browser or device |
| Technical records | Access time, IP address, error logs, usage statistics of model calls (not including chat text) | Automatically recorded |
We do not collect: your real name (unless you say it yourself in chat), full date of birth, or payment card numbers (all payments are handled by Steam, and we cannot access them).
Sensitive information: You may voluntarily disclose sensitive information such as health, religion, or sexual orientation in chat. This information will be processed like other chat content (including being sent to the official DeepSeek API, with servers in China). Before you first use the service, we obtain your explicit consent, via a separate checkbox, to the processing of such sensitive information and its transfer to China; you may withdraw at any time in settings, and after withdrawal you will be unable to continue using the chat function (existing data will be handled under Sections 6 and 7).
4. Why We Use This Information
| Purpose | Information used |
|---|---|
| Providing the Service: having characters reply to you, remember you, contact you proactively, and live while you are absent | Chat content, processed memories, account information |
| Confirming you are 16 or older, recording the terms you agreed to and your sensitive-information consent | Age confirmation |
| (After paid features open) Calculating and deducting in-game currency, processing purchases and refunds | Payment information |
| Enforcing content rules (e.g., the rule on sexual acts involving minors), handling reports and violations, preventing abuse | Chat content, reports and violation records |
| Identifying your explicitly expressed real-world intent to self-harm and displaying help information | Chat content |
| Troubleshooting and ensuring security | Technical records, decision records (see Section 6) |
| Push notifications "She sent you a message" | Push subscription |
We will not: use your conversations ourselves to train or fine-tune any AI model; sell your information to anyone; use your information for advertising targeting. (As for whether the official DeepSeek API to which chat text is sent uses it to train its own models, we cannot guarantee on its behalf; see Section 5.)
5. Who We Give Information To
| Recipient | What is given | Why | Country where data is located |
|---|---|---|---|
| Official DeepSeek (Hangzhou DeepSeek Artificial Intelligence Basic Technology Research Co., Ltd.) | Content needed to generate replies: character settings, memories relevant to this reply, recent conversation; will include your chat app nickname and game name; does not include email or SteamID | Generating characters' replies, diaries, plans, memory organization, plot arrangement, content checks, etc. | China |
| Valve (Steam; login verification) | When you log in with Steam, login credentials are given to Valve for verification; Valve tells us your public SteamID. Chat content is not given | Verifying your Steam account | United States |
| Server hosting provider | All data of the Service (hosting) | Operating servers | See updates to this policy |
| Push services (Apple, Google, browser vendors; only when you enable push) | The content of push notifications (by default only "She sent you a message" and the first few characters; preview can be turned off) | Sending notifications | Countries where each provider is located |
- The content sent to DeepSeek includes only the parts needed to generate replies, including your chat app nickname and game name (the character needs them to address you), and not including your email, SteamID, etc.
- Official DeepSeek's processing of data: its published privacy policy (2026-02-10 version) states that data is stored in China, retained for "the period necessary to provide the services," and lists model training as a purpose, with users having the right to refuse training; the open platform terms do not state whether API data is used for training. We have no written assurances from it regarding retention periods or non-training; please assume that your chat content may be stored and may be used for training. Whether we have submitted a request to it to refuse training is unverified and is not treated as effective.
- No other AI model providers are currently used. Before adding a new provider (e.g., a backup provider), we will first update this policy and notify you within the Service.
- Transfer to foreign countries: Your chat text and memories will be provided to official DeepSeek located in China. China has the Personal Information Protection Law, Cybersecurity Law, Data Security Law, etc., which differ from Japan's regime; government authorities may, under circumstances provided by Chinese law, require it to provide data. We obtain your consent separately before you first use the service (the sensitive-information checkbox above, which also states that data is sent to China). If you do not consent, you cannot use the chat function.
- Players using their own Key: If you use your own API Key, your conversations will be sent to the provider you have chosen, and that provider's terms and privacy policy apply.
- Other than the above, we will provide your information to third parties only when required by law (e.g., a court order).
6. How Long We Retain It
- Original chat text: Stored encrypted on servers, retained in full long-term, for the character to review verbatim text, for multi-device synchronization, and for viewing the phone within the story. Retained until you delete it (see Section 7 for how to delete) or until you delete your account. There is no automated step on the servers to clean up original chat text; if you do not delete it, it is retained indefinitely.
- Images: Image posting is not available during the beta, so images are not stored.
- Another copy of chat history is stored on your own device (browser local storage), and you can export and migrate it.
- Processed memories (facts, diaries, a small amount of verbatim text, relationships, character states): Retained until you delete your account.
- The characters' own background lives (their plans, diaries, thoughts, interactions with other characters): Handled the same way, and also sent to the model provider for generation; the model costs for this part are borne by us and are not deducted from your credits.
- Decision records (used for troubleshooting): Parts containing text are cleared after 72 hours; parts not containing text (values and reasons) are retained for 30 days.
- Reported messages: The reported message and 10 messages of context before and after are retained for 90 days or until handling is complete.
- Violation records: Retained for 1 year.
- Payment records (after paid features open): Retained for 7 years as required by law, even if you delete your account.
- Bring-your-own API Key: Retained until you delete it or delete your account; deactivated Keys are deleted after 30 days.
- Backups: Server backups roll over (the configuration says 14 days; see Section 8 for what is uncertain); after you delete your account, data will disappear from backups within this period.
- Technical records: Operation logs are retained for 90 days; chat text and Keys are not recorded in operation logs.
7. Your Rights
You can:
- View and export: Export your data on the servers in settings (account information, original chat text, memories, relationships, cards you wrote, etc.); chat history on your device can also be exported at any time.
- Correct: Change your chat app nickname, avatar, and settings; cards you wrote can be changed at any time.
- Delete:
- Chat content sent to DeepSeek: After we delete it on our side, we cannot delete the copy on DeepSeek's side; we can only submit a deletion request to it, and it has not committed to a fixed period.
- Deleting chat messages (modeled on Telegram, in two kinds):
- Delete for myself only: This message disappears from your chat interface (no longer in history, previews, or unread). The character's side is unchanged; the original text on the servers is still retained, and it will still be included when you export your data.
- Delete for both sides: This message disappears from both your and the character's interfaces, and the original text on the servers is also truly deleted (it will also be gone from backups after at most 14 days), and it will no longer be in your exported data. If she has not yet received or read it, she will never see it; if she has already received and read it, she remembers it once seen, and memories are not deleted along with it. (As with Telegram, we cannot control the copy already received on DeepSeek's side; see above.)
- Unsend: A one-on-one message just sent can be unsent within 2 minutes; if she has not read it, she will never see it; if she has read it, she still remembers the words.
- Deleting chat history: You can delete the chat history of a conversation or all conversations: the chat text and attachments in these conversations on the servers will be deleted (in group chats, only those you sent yourself are deleted), and the servers perform a cleanup once a day so that deleted content truly leaves the data files.
- It will remain in backups for a while: Server backups roll over with a 14-day retention, so content you delete will disappear from backups after at most 14 days.
- The character's memories: Deleting messages will not make the character forget content already received and read; only what she has not received will not enter her memories.
- Deleting a friend (character): Remove her from your contacts; she will no longer proactively send you messages, and you can add her back later; her memories of you and your chat history both remain.
- Destroying a book (world): Delete all archives of this book; characters already brought out of this book are not deleted.
- Deleting your account: All data related to your account is deleted, except for payment records that Section 6 states are required by law to be retained, and reports and violation records not yet fully handled.
- Withdrawing consent: For example, turning off push; withdrawing consent to sensitive information or to provision to a foreign country (China) means the Service can no longer generate characters' replies.
- Objecting, restricting processing: Contact us.
- Complaints: You can complain to the data protection authority in your country (Japan: Personal Information Protection Commission).
To exercise your rights, please email [email protected]. We will respond within 30 days. To confirm that it is you, we may ask you to make the request from a logged-in account.
8. Minors
The Service is limited to those aged 16 and over. We confirm age when you first use the service. If we learn that a person under 16 is using the Service, we will delete that account and related data.
9. Security
The measures we take include: encryption in transit (HTTPS); encrypted storage of chat text; encrypted storage of the API Keys you upload, with the master key used for encryption stored separately from the database, decrypted only temporarily at the time of invocation, never written to logs, and never returned to the browser; runtime logs do not record chat text or keys; the admin backend requires administrators to use two-factor authentication; access permissions are granted only to the operator personally.
No method can guarantee one hundred percent security. If a data breach occurs that may affect you, we will notify you and the competent authorities as required by law (Japan: Personal Information Protection Commission).
10. Cookies and Local Storage
- Cookie used for login (necessary, HttpOnly).
- Browser local database: stores a copy of your chat history (only on your device).
- We do not use advertising or third-party analytics cookies.
11. Changes to This Policy
When we modify this policy, we will notify you within the Service; for material changes (for example, adding new data recipients or changing the retention period), we will notify you 30 days before they take effect and, where necessary, seek your consent again.
12. Contact Us
Studio Bansho
[email protected]
During the beta period, the business location is not disclosed; if you need to contact us, please send an email to the above address; the business location will be announced separately before paid services open.