Miyuki Kuramitsu is the wife of Mikumo Kuramitsu. She is the daughter of Nabiki, the 2nd wife of Ranma Kuramitsu, and was originally the stepsister of her future husband.
Miyuki and Mikumo had always been close since they day they were born. Wanting them to have more normal life then him Ranma didn’t start training them seriously until after the assassination attempt by Kain in which they were only saved by their brother Ran teleporting them to Tokimi’s lair where the two convinced her to allow Ranma to train him. After only a year of training the three were able to fight off a group of kidnappers when they were enrolled in the Willow Mountain Elementary School Complex. It is not known when the started there relationship only that they started to be open about it once they left for the University.
Miyuki has repeatedly tried to set up Ran with someone however she has awful taste in finding girls for him as they all range from incredibly kinky to out right murderous. She and Mikumo have at least three children Minami and Mikami Kuramitsu, as well as an unnamed second daughter who went into fashion.