Ranma has a pet when he goes to Jusenkyo, but there's more to the unusual kitty than meets the eye.  (Comedy/ Adventure) Ranma ½ / All-Purpose Cultural Catgirl Nuku Nuku crossover.

All Purpose Jusenkyo Girl Nuku Nuku

A variation of the "character 'x' is burakumin" idea, this story explores the reactions of the Ranma cast to learning that one of their number has ancestry the rest find unacceptable. (Drama) Ranma ½.

Crossing the Line

In this authorized rewrite and continuation, Ranma lives a very different life because his mother, Nodoka, was born the eldest daughter of Katsuhito Masaki. (Adventure) Ranma ½ / Tenchi Muyo! Ryo-Ohki / Pretty Soldier Sailor Moon crossover. Adapted from a story by Ammadeau.

No Need for Ranma