A beach chair sat on the shore. Masaru, his son, sank back into the chair and let out a deep sigh. It was three and a half hours from Tokyo. It was his first long drive since getting his driver's license. A woman in a swimsuit was frolicking in the water at the shoreline. There was no need to call her a woman. Masaru's mother, Izumi, was smiling in a tiny bikini that made him feel embarrassed. "Hey, Masaru! Don't just sit there, come get in the ocean!" she called out with a beaming smile. "Damn, Mom! Why do I have to come all the way out here on this summer vacation?" Masaru muttered, gazing blankly at his mother's swimsuit. Their body line was quite feminine. Realizing he had been captivated by his mother's body, Masaru quickly looked away.