Some general comments - as always, just my opinions here:
Overall, a very nicely done fic, Roeder-san. Straight from the start the reader
can see where it's headed (to a Ranma-Ryoga matchup) and it flows quite nicely to
that intended end. Congrats on pulling that off. :)
But (oh, yes, I'm sure you could see that 'but' coming a mile away) I'd just like
to point out that having the curse influencing Ranma into feminity feels very much
a cop-out to me. I don't mean its badly done - in fact, I think you've thought
through the whole issue rather well - I just feel it would have had greater impact
if it had been Ranma who had changed over the years and needed a 'companion' in
his own right.
True, it could be that Ranma is attributing the changes to the curse rather than
be willing to accept the truth, I don't see that in the story, so I'll assume this
isn't so. Even if he does do that, you can show readers in the story that this
isn't the case.
Being both a mother and father to the girls would likely have a great impact on
Ranma, so it isn't inconcievable that he'd react in the manner described in the
story and become a bit more half-and-half over the years. Ranma-Ryoga have always
had a weird love-hate relationship in the manga (IMO ^_^), which I suppose is why
people enjoy putting out yaoi stories for them. Sorta like Akane calling Shampoo
cute when she first shows up (perhaps I read too much into that one statement?).
That brings me to the girls - I think their presence is probably just about right,
the background history in action, so to speak. You might want to consider (as Gary
has already mentioned) making the family a little less lovey-dovey and a bit more
conflict inclined. This is Ranma, after all - I can't see things happening quite
so perfectly for him.
Gratuitious use of Japanese - I won't say too much about this (being a frequent
offender myself ^_^), save to mention a favourite author of mine: Steven Gould. If
you've glanced at his latest novel, Blind Waves, you'll understand why I point him
out: gratuitious use of Spanish in conversation (at least I think it's Spanish).
It made such a big difference on my enjoyment of the book, making me feel I'd lost
most of the jokes in noncomprehension, that I'm rethinking my stance on usage of
Japanese in fanfic.
Oh, and a very nice finish to leave it open-ended rather than providing a
conclusive ending.
That's about it from me, except that I think 'Ba-a-ka' sounds perfectly fine (with
apologies to MacDougall-san for countering his objection) to me.
Phil-san.
(Still using too much Japanese ^_^)