Mashiro Ao lives with her son in housing constructed in Ishinomaki City, Miyagi Prefecture after the Great East Japan earthquake. She appears to have bounced back and lives cheerfully. But she actually keeps waiting for her husband Takaomi who has been missing since the tsunami hit Ishinomaki City. At that time, both the bookstore that Takaomi and her mother-in-law mother Asako had been running and their house were swept away. That plot of land was designated a disaster area and Aoi could not return. It has been almost 10 years since then. Aoi decides to renovate a vacant house in town and reopen the bookstore that Takaomi loved with start-up capital she had steadily saved up and the books she had bought again. That is how Aoi meets Hayama Eiki through her younger sister-in-law Haruka. Eiki is a socially awkward architect who moved to Miyagi Prefecture in search of a place where he can be himself. At first, Aoi and Eiki are not able to understand each other as they are complete opposites in personality and have different backgrounds. However, they start to feel mutual attraction while setting up the bookstore together. Even though things seem to be going well between Aoi and Eiki, neither of them can take a step further because the missing Takaomi still looms large.