ONEJAPAN has introduced OpenAI's latest AI model, GPT-5, to support its members. In addition to being able to try it out via instant chat from the official LINE account, members can also use GPT-5 support at the help desk of the member site after logging in.

Thank you very much for using ONEJAPAN.
For the purpose of improving the quality of member support, OpenAI The company's latest AI model, GPT‑5 We have adopted it.

For daily questions and inquiries about procedures, you can first use the official LINE account.

[ONEJAPAN Official LINE]
Add a friend: https://link.one-japan.jp/line

Note: "List Item Elements" are not supported in LINE messages, so if the AI generates List Item Elements, all these elements will be displayed at the bottom of the document, and the order of the documents may be different. To avoid this problem, we recommend the help desk on the ONEJAPAN member site.

The help desk on the member site is available with a light blue round icon that appears in the lower right corner of all pages.

[Membership site]
https://members.one-japan.net/

Thank you for your continued support.

ONEJAPAN Secretariat