Life and Death

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In the original OS-tan canon, there were no deceased OS-tans, and little mention of death. The closest thing to this are a few strips set in the OS Wars depicting 95-tan nearly killing Mac-tan, referencing Apple's near-demise between 1996-98.

The first known mention or proposal of deceased characters was in the OS-tan Annex Project, the foundation of the OS-tan expanded universe. Among the OS-tan expanded universe fandom, it's accepted that in most cases, for an OS-tan to be deceased, they must not only be discontinued by their system's developer, but also largely forgotten by its former userbase.

OS-tans do not age like normal humans; they age very slowly, but their lifeforce fades over time after being a discontinued system. They are kept alive afterwards by their system's remaining userbase, emulation and original hardware. Occasionally, there are a few OS-tan deaths for storyline purposes.

It is the proprietary OS-tans that are the most vulnerable to death, since Open Source OS-tans represent systems that can still be freely modified even after being discontinued by their original developer.