I was reading a fanfic earlier and it made out like Kasumi is a saint and Ranma and Kasumi would be the perfect couple with no changes needed in either character.
I do not think Kasumi likes Ranma at all. Now it is true that Kasumi doesn't hit Ranma like AKane and she doesn't blackmail him like Nabiki does. Kasumi is not nice to Ranma she is just more subtle then the rest of the characters in the manga. Kasumi sent Ranma into the bathroom knowing that Akane was in there and knowing what Akane's reaction would be. Kasumi gave Akane a mallet so she could protect herself from Ranma when Akane was sick. Kasumi helped drape cats on Ranma after learning about Ranma's fear of cats. Kasumi will often say something seemingly innocently that makes an already bad situation for Ranma worse.
Another reason that shows Kasumi doesn't like Ranma. Kasumi doesn't really talk to Ranma in the manga. She also doesn't do anything to help Ranma situations. If she liked Ranma she would try and help him and would spend time talking to him.
As they are Ranma and Kasumi are not compatible. Kasumi could not live Ranma's life style and Ranma would find Kasumi to be pretty boring.
I do not hate Kasumi. I actually like her a lot and I like Ranma/Kasumi fics that are done right but most of the Ranma/Kasumi fics annoy me. Taking away Kasumi's (or Ranma's) bad points or over emphisizing one particular part of her character (like making her much more oblivious) makes her a much less interesting character. Even though she is not shown much in the manga we do see some other aspects of her character besides how nice she is. I also don't like that in many of them Kasumi and Ranma get together for little to no reason.





