I read that as “Project Shutdown” and was thinking that’s a terrible codename.

It’s a Debian-based toolkit tailored for IT professionals, system administrators, and network engineers, offering a suite of tools for diagnostics, maintenance, and repair of computer systems and networks.

So kinda like Kali Linux?

wish to embark on other professional and personal projects that will take up a considerable amount of my time, and for this reason, I can no longer continue developing Kaisen Linux.

There, no explanation, saved you a click.