The antique shop "Kura" stands alone in the Teramachi Sanjo shopping street in Kyoto. High school girl Aoi Mashiro accidentally meets Kiyotaka Ieto, the son of the owner of "Kura", and starts working part-time at "Kura". Although Kiyotaka's words and deeds are very gentle, he has a frighteningly sharp intuition and is known as "Sherlock Holmes". Aoi and Kiyotaka begin to accept various requests related to antiques brought by customers.