Mizushima Satoru is a designer, who prefers traditional things like handmade items and handwritten works. One day, he happens to meet a mysterious woman, Miharu Miyuki, at the cafe named Piano. She seems to have similar values to him and he is attracted to her. Mizushima Satoru asks for her cellphone number, but she doesn’t own a cellphone. They make a promise to meet at the cafe every Thursday. Since then, Mizushima Satoru & Miharu Miyuki meet every Thursday and their relationship develops romantically. Mizushima Satoru decides to propose her, but, on the day he is going to propose her, Miharu Miyuki doesn’t show up at the cafe.