Curséd Cave of Broken Loves Arc

The  is the 68th story arc covered in the Ranma ½ manga, spanning two chapters. This arc was included in volume 27 of the  and volume 25 of the Viz Media tankōbon.

Plot Summary
As Ukyo looks through some travel brochures she discovers one for an odd locale, the Curséd Cave of Broken Loves. According to the legend a couple who enters the cave together will break-up before they reach the other side. Ukyo decides to take Ranma and Akane along in hopes of ending their engagement. To prevent herself from getting paired with Ranma and ending their own engagement, she drags Ryoga into the cave and tells him about the plan. Ryoga agrees, but is unable to distance himself from Akane, especially when she asks for his help. Ranma and Akane start believing that Ukyo and Ryoga have become a real couple and decide to let them stay together. When they get to the exit, the ghosts mistake Ukyo and Ryoga to be the couple and attack them instead of Ranma and Akane. When they exit the cave, they blame each other for the failed plan.

Major Events

 * Ukyo and Ryoga attempt to break up Ranma and Akane but fail.

Changes in anime

 * In the manga, Ukyo, Ryoga, Ranma, and Akane are the only ones to enter the tunnel. Anime adds Shampoo, Mousse, Genma, Cologne, Soun, Kasumi, Nabiki, Kuno, Kodachi and Sasuke. Shampoo is the co-creator of Ukyo's plan, but like everyone else just kinda disappears after the cave river part, only to appear by the end, outside the cave.
 * River in anime is a much bigger deal. It needs to be crossed using boats that begin to sink with 2 people inside, forcing couples to try pushing each other out. Ryoga must choose between pushing Akane out or revealing his curse to her. Ultimately he just jumps between boats and rocks, barely reaching shore (but still turning into a pig).
 * Most of the added cast has a little moment during that part. Most notably, when her boats begin to sink, Cologne ties a bunch of Genma's signs to make a new one.
 * In the manga, ghosts at the end are so focused on Ukyo and Ryoga (because they mistake them for a happy couple), they let Akane and Ranma pass, two of them never realizing there was any danger. But in the OVA Akane and Ranma almost get separated, until they start arguing as usual. Ghosts lose interest in them, focusing on Ukyo and Ryoga instead.

Characters Introduced

 * No characters were introduced in this arc.