Starting from 2017, the author(s) whose article is published in the Kiryoku journal attain the copyright for their article and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. By submitting the manuscript to Kiryoku, the author(s) agree with this policy. No special document approval is required.

The author(s) guarantee that:

• their article is original, written by the mentioned author(s),
• has never been published before,
• does not contain statements that violate the law, and
• does not violate the rights of others, is subject to copyright held exclusively by the author(s), is free from the rights of third parties, and the necessary written permission to quote from other sources has been obtained by the author(s).

The author(s) retain all rights to the published work, such as (but not limited to) the following rights:

• Copyright and other proprietary rights related to the article, such as patents,
• The right to use the substance of the article in its own future works, including lectures and books,
• The right to reproduce the article for its own purposes,
• The right to archive all versions of the article in any repository, and
• The right to enter into separate additional contractual arrangements for the non-exclusive distribution of published versions of the article (for example, posting them to institutional repositories or publishing them in a book), acknowledging its initial publication in this journal (Kiryoku: Jurnal Studi Kejepangan).

Suppose the article was prepared jointly by more than one author. Each author submitting the manuscript warrants that all co-authors have given their permission to agree to copyright and license notices (agreements) on their behalf and notify co-authors of the terms of this policy. Kiryoku will not be held responsible for anything arising because of the writer's internal dispute. Kiryoku will only communicate with correspondence authors.

Authors should also understand that their articles (and any additional files, including data sets and analysis/computation data) will become publicly available once published. The license of published articles (and additional data) will be governed by a Creative Commons Attribution-ShareAlike 4.0 International License. Kiryoku allows users to copy, distribute, display and perform work under license. Users need to attribute the author(s) and Kiryoku to distribute works in journals and other publication media. Unless otherwise stated, the author(s) is a public entity as soon as the article is published.

Notes for Usage of Generative AI in Scientific Writing

The following guidance refers only to the writing process, and not to the use of AI tools to analyse and draw insights from data as part of the research process:

• Generative AI and AI-assisted technologies should only be used in the writing process to improve the readability and language of the manuscript.
• The technology must be applied with human oversight and control and authors should carefully review and edit the result, as AI can generate authoritative-sounding output that can be incorrect, incomplete or biased.
• Authors are ultimately responsible and accountable for the contents of the work.
• Authors must not list or cite AI and AI-assisted technologies as an author or co-author on the manuscript since authorship implies responsibilities and tasks that can only be attributed to and performed by humans.
• The use of generative AI and AI-assisted technologies in scientific writing must be declared by adding a statement at the end of the manuscript when the paper is first submitted.
• We do not permit the use of Generative AI or AI-assisted tools to create or alter images in submitted manuscripts.
• The use of generative AI or AI-assisted tools in the production of artwork such as for graphical abstracts is not permitted. The use of generative AI in the production of cover art may in some cases be allowed, if the author obtains prior permission from the journal editor and publisher, can demonstrate that all necessary rights have been cleared for the use of the relevant material, and ensures that there is correct content attribution.