It is:
RANMA 'Ordinary' by Donny Cheng - [Notice=Graphic Material] - [Dld Date=10/08/2004] - [Dld Size=75kb] - [Status=Inactive]
There are plenty of others really, as a lot of outsiders see Ranma in his life in various fan fiction.
For example... a couple arcs of the following:
R-MULTI 'Not Another SI Fic' by Enigmatic Magus-T Kagato - [Dld Date=12/20/2009] - [Dld Size=1501kb] - [Dld Files=56] - [Status=Inactive]
And how about portions of:
R-MULTI 'Never Negociate with the Ice Queen' by NomadicOne - [Dld Date=04/07/2006] - [Dld Size=833kb] - [Dld Files=9] - [Status=Complete]
A small portion of the folloing has a elf watching snippets of his life, always missing the punchline
R-RS 'Rune Soldier Ranma' by Animeaddiction - [Dld Date=07/26/2006] - [Dld Size=527kb] - [Dld Files=11] - [Status=Inactive]