乱马1/2 破恋洞的诅咒！吾爱永存

Shampoo and Ukyo, two love rivals, receive a travel agency invitation for a trip. After consulting reference materials, they decide to visit the Heartbreak Cave—legend says couples who enter are destined to break up. To sabotage Ranma and Akane's relationship, they invite Ranma and the whole group. Upon reaching the cave entrance, they pretend not to know that only couples can enter, pairing Ranma and Akane together to go inside. Later, Ryoga and Ukyo team up, doing everything they can to make the plan succeed...