Venus to Mamoru! (2006) : 1x17

Mamoru-kun and the Student Council go on a trip to while on the plane Ayako-san and Mamoru-kun make a plan to go to a cliff, this cliff is said that if a couple is to kiss on the cliff will be together forever, and kiss. They go to a beach and Mamoru-kun is asked by all the females including Ayako-san how they look but to ruin it Yagi-kun jumps in to the middle of it and scares everyone. Ayako-san throws everyone else in to the sea. After that she and Mamoru-kun are alone for a while and Mamoru-kun compliments her and the Vice-President and all the other girls gather around. Student President and Emelenzia-chan are sitting together and they all gather around them. While they are at the beach the all go have fun in the water and then Emelenzia-chan and Mamoru-kun fall into the water and Mamoru-kun goes and checks on her and comes to find out that she has lost hers swimsuit. When Mamoru-kun fell in Ayako-san rushes out to him. When they, Emelenzia-chan, Mamoru-kun, and Ayaoko-san, got back to the hotel they were going to go out and do something alone just to be interrupted. What will happen if they keep getting interrupted? Near the end they, Mamoru-kun and Ayako-san get stuck in a cave. What are they going to do?