Q&A and tips

LUMINAS Compass is a service that helps you deepen your understanding of yourself and the people close to you by talking with an AI, using a Sanmeigaku destiny reading based on the date of birth as a guide. You use it by adding the “LUMINAS Destiny Reading” connector to ChatGPT or Claude.

Sanmeigaku is an East Asian discipline that reads a person's inborn nature, talents and role, as well as the course of their life, from their date of birth (year, month and day). LUMINAS Compass gives destiny readings using Sanmeigaku. It is a different discipline from other systems such as Western astrology.

If you are studying readings, see For those aiming to become readers. If you want an easy way to check your own destiny, see For those who want to check their own destiny. If you want to add destiny readings to your current work or systems, see For those who want to bring destiny readings into their own services.

On the application page, enter your name and email address, agree to the Terms of Use, the Privacy Policy and the Non-Disclosure Agreement, and apply. The application form is in Japanese only.

Please check your spam folder and make sure the email address you entered is correct. If you have received the confirmation email, you can correct your email address using the correction link in that email.

It is a code unique to you, used to confirm your contract. We send it to you by email after you apply. Please do not share it with anyone else.

You can check it with your registered email address. Use “Forgot your user code” (ユーザーコードを忘れた方) on the contract holder page to receive it by email.

You can check it with your user code on the contract holder page. A notice is sent to your registered email address 7 days before the expiry date.

You can complete the renewal procedure (利用継続) with the same user code. After you apply, we send bank transfer instructions to your registered email address. After you transfer, open the “I have transferred” (振り込みました) link in the email and press the button on the confirmation screen. You will then receive the “Renewal notice” (利用継続のご案内) email (with your user code, your new expiry date and the getting-started steps), and your period is extended by 30 days from your current expiry date. If you complete the procedure after the expiry date has passed, the period is 30 days from that time. (If you move to the paid plan before the notice sent 7 days before the end of your trial, the remaining trial days are not added, and the period is 30 days from that time.)

No cancellation procedure is needed. If you do not complete the renewal procedure, your use ends on the expiry date.

Please contact us through the contact form.

The reading calculation uses your date of birth and gender, and your user code is used to confirm your use. The information we handle and how long we keep it are set out in the Privacy Policy.

Please get the person's consent first, and share only what is necessary. When you show the results to others, please also respect the person's feelings.

You can request disclosure, correction, deletion or suspension of use through the contact form (we respond after confirming that you are the person concerned). Records that must be kept under law or for your contract, such as contract, payment and tax records, are not deleted even if you request it. Other records are deleted in turn once the retention period in section 2 of the Privacy Policy has passed. Requests based on law are handled in accordance with the law.

ChatGPT and Claude have settings that stop your conversations from being used to improve their models. If this concerns you, check the data-related options in each app's Settings.

Yes. You can choose how the AI talks from nine modes. There is a mode that avoids technical terms, and a mode with gentle words for parents explaining things to their child.

From December 1, 2026, the MCP version can be used in ChatGPT and Claude (until then, the GPTs version in ChatGPT). You can use it in the smartphone apps or on the web on a computer.

Yes, as long as you use the same AI app account.

Yes. You can use it with the free plans of ChatGPT and Claude. However, the number of uses, speed, image generation and level of detail in the text may vary depending on your plan.

LUMINAS Destiny Reading offers a free 10-day trial, and start and renewal cost 3,000 yen (tax included) for 30 days. You are not moved to a paid plan automatically after the trial. The price and contract are the same for ChatGPT and Claude. For details, see the Pricing and plans page.

The chart and stars are calculated by a dedicated engine, so they do not change with your plan or model. However, the number of uses, speed, image generation and level of detail in the text may vary depending on your plan and any usage limits at the time.

The Getting started page sets out the steps for ChatGPT and for Claude.

The conversation mode (its number), and the nickname, date of birth and gender of the person to be read. The nickname does not need to be a real name. “Me” is fine too.

No. Sanmeigaku gives readings from the year, month and day of birth.

Readings are available for dates of birth on or after February 4, 1873.

If it is your first time, we recommend “1 Normal” or “3 No technical terms”. The nine modes page has tips on choosing.

Yes. Just say things like “a little gentler”, “use fewer technical terms”, “keep the conclusion short” or “include the opposite possibility too”.

Ask about whatever is on your mind, in everyday words. For example: “What are my strengths, and how can I use them at work?”, “How should I talk to this child?”, “How do our values differ, and how can we improve our relationship?” or “What is the flow of this year, and what should I keep in mind?”

Give the nickname, date of birth and gender of each of the two people. After the reading, ask “What is our compatibility?” or “How should we relate to each other?”

Ask “Please draw the universe board for (name).” It is drawn from the reading result using a dedicated method.

Yes. Give the kanshi (year, month and day) and ask “What dates of birth could match this chart?”

Check that the connector is turned on in that chat, then start a new chat and send “Please give me a reading” again. If it still does not work, try signing in again.

Your contract period may have ended, or your user code could not be confirmed. Please check your contract. The conversation in which this message appears ends there, so after checking, start a new chat.

This can happen when the connector is not turned on in that chat, or when you are not signed in. In Claude, check “Tools” in the message box; in ChatGPT, check the app you select in the chat.

In your AI app's settings, first “Disconnect” the connector, then “Connect” it again.

You can also read a chart yourself and then compare it with the AI's interpretation, or check how to choose words that reach the person in front of you (For those aiming to become readers).

Feel free to talk about any theme on your mind: relationships and communication, family and parenting, love and marriage, work and career, dreams and goals, learning and growth, writing, and more. Seeing differences as individuality rather than as better or worse can help you accept yourself and others.

Please tell us through the contact form what you discovered, in what situations you used it, and anything that was hard to understand or that you would like improved. We keep making improvements based on the feedback we receive.

There is no set prompt. Describe what you want specifically, do not add too many conditions at once, and look at each image and point out what to fix one thing at a time. Image generation features differ between AI apps.

Image generation does not copy the reading result as it is. Use the text result from the reading as the reference for the correct chart and stars. For the universe board, ask “Please draw the universe board”, and it will be drawn correctly using a dedicated method.

Images created with an AI app's image generation feature are not reading results from this app. This app cannot take responsibility for the content of such images.

Conversations stay in your AI app account until you delete them yourself. How deleted conversations are handled depends on each app's policies (OpenAI, Anthropic).

Not necessarily. An AI app's memory feature may affect how the interpretation is worded, but the chart and stars are calculated by the engine and do not change. Restate important background at the start of each new chat.

Pinned chats and projects in ChatGPT, and projects in Claude, let you group important chats and conversations by purpose.

This is the limit on the number of uses per day. Please try again the next day.

Tell it specifically what viewpoint you want, for example “only points that do not overlap with the previous answer”, “include cautions and realistic measures too” or “include a stricter view as well”.

Starting again in a new chat helps. We also recommend separate chats for each purpose or for each person being read.

Please contact us through the contact form. It helps if you tell us the message that appeared, the date and time it happened, and what you did just before. Please do not include personal information such as your user code or date of birth. If needed, we will ask you individually. We reply in Japanese.

Until December 11, 2026 (under OpenAI's rules). From December 1, you can complete the procedure on the migration page (in Japanese). We will also send you an email with instructions.

Both use the same dedicated engine for calculation, so the chart and star results are the same. What changes is where you use it (the MCP version works in ChatGPT and Claude) and the user code (the MCP version uses a new user code). For details, see “Differences between the GPTs version and the MCP version” in the renewal announcement.

Open the app's URL, start a new chat on that screen, and press “Reading for the first person” (1人目の鑑定). If the button does not appear, send “Please give a reading for the first person” (1人目の鑑定をしてください).

Once the required information is complete (the name and user code of the person talking, and the name, date of birth and gender of the person to be read), the reading starts without asking for confirmation. If it keeps repeating, start again in a new chat.

In an ordinary ChatGPT chat, or in an old or very long conversation, the reading feature may not be available. Open the app's URL again and start a new chat from that screen.

Your user code may have been entered incorrectly, or it may have expired. Check your usage status on the contract holder page.