Venus to Mamoru!

Mamoru and the Student Council go on a trip. On the plane ride over, Ayako and Mamoru make a plan to go to Rainbow Cliff, a special cliff that is rumored to keep a couple together forever if they kiss there. They go to a beach and Mamoru is asked by all the females, including Ayako, how they look, but Yagi-kun jumps into the middle of it and scares everyone. Ayako throws everyone else into the sea. After that, she and Mamoru are alone for a while. Mamoru compliments her, and the Vice-President and all the other girls gather around. Emelenzia falls into the water, and Mamoru goes to check on her, finding out that she has lost her swimsuit. When Mamoru falls in, Ayako rushes out to him. When Emelenzia, Mamoru, and Ayaoko get back to the hotel, they try to go back outside and do something alone only to get interrupted. Later, when they go to a cave to be alone, they get trapped inside by a large storm. (Source: Wikipedia)