Waka is a librarian worried about affording a new place big enough to hold her book collection. She ran into Shinobu, an old high school classmate who had kissed her once and then suddenly left the country. Now he's back and looking for a place to live, too, and he offers to share an apartment big enough for both of them and her books. But even as they move in together, Waka wonders about that kiss long ago…

Note: Includes seven bonus chapters in the volume releases.