The first time that up-and-coming architect Yuji Muraoka (Yujiro Ishihara) met Natsuko (Ruriko Asaoka) was at a contemporary art exhibition at the Ueno Museum of Art. At the time, he didn't feel anything special about her, other than being impressed that she was the younger sister of the respected Nonomura-san. Later, at Nonomura's birthday party, some people who were jealous of Yuji's talent tried to embarrass him by forcing him to perform a hidden talent show, and Natsuko quickly came to his rescue. This incident caused the two of them to become much closer...