Greasy Fork is available in English.
Enable next / previous chapter on right / left arrow keys on Enkiros Translations' Arafoo Kenja chapters.
Navigate Enkiros Translations' Arafoo Kenja chapters using the left and right arrows on your keyboard. Left is previous chapter, right is next chapter.
Developed in Tampermonkey v4.11.6120 using Firefox 84.0 (64-bit) on Windows 10 Pro.
I sometimes make dark CSS themes and JS userscripts. Some of them aren't terrible.