Hamabe no gêmu

One day in Spring, a college student Sayaka visits Shonan with Yui. Sayaka is secretly attracted to Yui, but Yui's best friend Momoko was waiting for them. The three girls started to stay at a holiday villa by the beach. Sayaka's anger and disdain towards Yui intensify as she finds it hard to keep up the pace with Yui and Momoko and there was an uncomfortable feeling among them. At the same time, there was Akihiro who was invited to the same villa to play at a party. While the girls enjoy chatting about Akihiro, he became interested in Sayaka and tries to attract her. Meanwhile, a Korean international student Min Jun cajoles Yona, who came to visit colleges for her study abroad, to come to the villa with him...