Kyonko is actually the prime example of how to do rule 63 correctly.
A lot of people think that just adding tits to the character and making him still act like a male is genderbending.
That's not the case. That's just a shemale.
Real genderbending means the character retains its core personality, yet develops mannerism from the other gender (depending on if it's parallel unniverse (kyonko) or just transformation (ranma) those mannerism will be more or less strong).