Ukyo Kuonji Intro Arc

The  is the 18th story arc covered in the Ranma ½ manga, spanning seven chapters. This arc was included in volume 9 of the  and volume 8 of the Viz Media tankōbon.

Plot Summary
After his father was attacked the night before, Ranma and Akane try to figure out just what Genma's relationship is with his attacker, "Ukyo Kuonji". That afternoon, Ukyo appears at Furinkan High School, allowing Ranma to finally remember them as "Ucchan" from his childhood.

Ranma agrees to take up Ukyo's challenge and initially struggles, but gains the upper hand after sending Ukyo flying out of the rink. Once the pair land in the supply shed, Ranma notices Ukyo's cleavage and learns that "he" is actually a "she". Despite still being hostile towards Ranma, once he compliments how cute she is and seeing his lack-of-interest in Akane, Ukyo puts her anger aside in the hope of becoming Ranma's only fiancé.

Some days later Ryoga returns and begins fighting Ukyo, until learning of her true gender. Subsequently the pair meet at Ukyo's new restaurant where they devise a plan to split up Ranma and Akane for good so that they themselves get to be with them. Unfortunately things don't go to plan due to a combination of Ryoga's own shyness and Ranma disguising herself as an apparent fiancé of Ryoga.

Major Events

 * Ukyo Kuonji arrives in Furinkan to get revenge of Genma and Ranma.
 * Ranma learns that Ukyo is female.
 * Ukyo decides to stay in Furinkan in the hope of becoming Ranma's only fiancé.
 * Ryoga meets Ukyo.
 * Ukyo learns of Ranma's Jusenkyo curse.

Major changes in anime

 * In manga Genma few times changes into Panda without any water. In anime he simply pulls out a panda mask and pretends (badly).
 * Ryoga gives Ukyo map which takes her hours to find Akane's house.
 * Soun reacting to learning about Ukyo wasn't adapted. Neither was Akane and Ranma's talk about "date/duel".
 * "Ryoga's fiancee" dress is simpler and less revealing that in anime.
 * In anime Ranma agrees to go with Ukyo on a date to make Akane jealous. In manga Ukyo announced it's a date without consulting him.

Characters Introduced

 * Ukyo Kuonji