Summer of 2013, during a sweltering Obon season. Kenichi returns to his wife's hometown with her for a family visit. It's been three years since he last set foot in this traditional Japanese house. As they arrive at the entrance, his mother-in-law, Mikako, who works at his wife's family home, warmly greets them. "You've come all this way in this heat—thank you for your effort. I've prepared some cold tea, please enjoy, Kenichi." Her polite words wash over him, but his eyes are drawn to her back—the hem of her denim shirt sways gently, revealing a glistening, sweat-dampened nape that dazzles him. His heart begins to race instantly. Over the course of this two-night, three-day stay, life at his in-laws' home begins to unfold. And tonight, a special moment that will shake Kenichi to his core is about to begin.