A new UEFI-centric project. I wish I had time this month to look at what this is, the docs hint at Java being used? and there is Rust code. Via Google Translate:
It is a CP / M-like OS that runs on UEFI and runs on X86-64 architecture.
This program group starts with UEFI and forms an OS that runs on the X86-64 architecture.
https://github.com/kousoz80/Kous-OS