The next day, the two instructors go duck diving, a technique in which a diver tries to slow down his speed by diving under the waves with his surfboard. They're going to try a new technique called "freefall" , where a diver stops moving and sinks into the ocean. The two instructors, Kim Goeun and Kim Dongha, are on their way to the beach for the morning's lesson, and Kim says he's already checked in to his room to make sure they're all set to go. Kim and Dongha are married, and they've just gotten married. Kim is a little offended by the idea of being called a married couple, but Kim doesn't care. He and Kim have had a few fights in the past, both in Korea and in the city of bohol. Kim wants to know if there's anything painful about the fight, but he can't figure it out.