Thanks for checking out the font. As the main maker of it, I would love for it to include Cyrillic & Greek characters (and Arabic & Thai & more...), but this font’s variable axes mean that it is veeery slow to draw additional characters for (they have to be drawn in 12 or 24 different styles for things to work). But:

1. If someone wants to contribute the work in a PR, or the funding for work, I would be happy to extend the character set.

2. The font sticks to the most common width for monospaced fonts, so many fonts that do include Cyrillic & Greek glyphs will work elegantly as fallbacks. I recommend IBM Plex Mono, for one free + open-source option that is particularly good. Or, of course, you could just use Plex for everything, and you wouldn’t be wrong.