I just saw the first four eps of Ruronin Kenshin, a chunk of the Tenchi
TV series, and Highlander recently and came up with this...
What if Kenshin (or Yahiko or Kaworu) were immortal (a la Highlander)?
And what if Yoshio was once a student of Kaworu (or Kaworu's
father--yeah I know that would make it part of the OAV continuity
but...)  Actually the whole Tenchi thing could be dropped and just have
one (or more) of the Kenshin characters as immortals.  How would Kenshin
have dealt with Kaworu's death while he stayed young?  How would Kaworu
deal with having to kill to survive?  This would proabably end up being
pretty dark.
Anyone want to take it?

I was actually thinking of a Kenshin  / Highlander crossover.  The 2 series
would fit together so well.  My idea actually had Duncan MacCloud show up
though.  Basically, he'd be in Japan during the Meiji era and and meet up
with an immortal Kenshin.  The story is that Kenshin actually died when he
was 18, and that was why he looks so young at age 28.  Duncan would be the
first immortal he runs across and would have the 'game' and the 'gathering'
explained to him...   Then the story would just cut to the future where
Kenshin and Ducan meet up again.  Kenshin true to his vow, had yet to kill
anyone; even another immortal.  Basically, a situation would come where he'd
have to choose between the vow and death...  or perhaps, even do that in the
past, having him save Kawaro's life by killing another immortal or
something... ah well.  I'd like to do it, but honestly don't have the time.
I have enough unfinished fics out there as it is.  ^_^;;

-Anand