Oh, golly, that was a good one.  
And seeing how the characters match up, fantabulous!
However . . . something that I like about fusions is that it shows how a
certain character would deal in situations that weren't in their own series.  
Yet . . . I couldn't find anything of the original Ranma in here.  Well . . .
it was more of a 90-10 ratio Corwin to Ranma.  Possibly more.
Also, Ukyo seems to take a very passive role in this quest.  I just hope that
her presence becomes more . . . pronounced in future chapters.  I hope that
the . . . leavening? . . . influence of a wife would have some sort of
positive effect on him.  But how are you going to make a Merlin counterpart?  
Heh.  Funny shaped mace.

And who here doesn't doubt that King Ataru is a shadow of Ryo?
-Murmur the Fallen

"Let getting down with your bad self be a part of the whole of the bigger bit
of the rules."