Shiina, a young woman studying in college, is romantically involved with Shuu, a skilled artisan who works with copper. Over time, Shiina has grown accustomed to the sound of Shuu's constant hammering on the metal but remains unsure of his innermost thoughts and emotions. Nevertheless, to her surprise, Shuu pops the question and proposes marriage to Shiina! As they plan their future together, Shuu begins to understand how his passion for craftsmanship and his feelings of love might actually be interconnected.
