17-year-old high school student Akira Tachibana is a girl who barely expresses herself. She harbors a secret crush on Masami Kondō, a 45-year-old manager of the restaurant she works at part-time.

"Tachibana… What are you doing here?"

The blunt question, even though it was asked innocently, shakes Akira's heart. As Christmas draws closer, Akira resolves to do a certain something for Kondo, and Yui, Yoshizawa and Kase grapple with secret feelings of their own…