Two weeks after she started working at Kura, an antiques shop, Mashiro Aoi is happily settled in her new job. The store is owned by Yagashira Seiji, who is often out traveling the world, and his son Seiji is an author who manages it, but is more of an author. Seiji's grandson Kiyotaka, often nicknamed Holmes, a young antiques' appraiser, runs the actual store...