About this website

This website is Kuropen's personal website which contains blog, technical articles and game-related article.

Disclaimers about contents

All contents on this website reflect my personal opinion, not any company or group I belong to.

Posts aim to provide information are provided as-is, and not guaranteed. Despite I take care not to provide, inaccurate information may be included. Please use such information at your own risk.

I am responsible all information on this website. Please don't contact any other entities mentioned on this website.

Copyright notice

All texts on this website is licensed under Creative Commons Attribution-ShareAlike 4.0, unless otherwise noted.

For image and source code used for page generation, please refer to the readme file on GitHub.

Checked environment

This website and related website is checked with following environments. This does not mean that this website is guaranteed to work on following environments.

Note: This website is not, and will never be, tested on Internet Explorer.

  • Chromium-based browsers (Edge1, Brave, Vivaldi, Chrome, and so on)
    • Windows 10 PC with 1920x1080 display
    • Android 11 smartphone (Samsung Galaxy S20+)
  • Safari and compatible browsers
    • iPad mini, 5th generation, with iOS 14

Contact information

Contact information is written on Profile Page.

Privacy Policy

Privacy Policy is here.

Domains controlled by the author

The author of this website owns following domain.

  • kuropen.org
  • kuropen.me
  • eternie-labs.net
  • akabe.co

All websites on domains above are HTTPS-only. HTTP protocol communications are redirected.

Server environments

System Structure

Note: Caption is in Japanese. This image was drawn when this site was on Gatsby Cloud, I will redraw later.

  • Current Webpage since July 2021

Components used for this website


  1. Chromium-based one with skyblue icon only. Do not use EdgeHTML one with blue icon since it is no longer supported.
  2. For some contents, Amazon S3 used for copyright protection.
  3. For some contents, AWS CodeCommit used for copyright protection.
  4. Used for open graph image. Not used in web page.