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A small fortified city said to have been built in the shape of a heart. In the back alleys of this city, there is a mysterious antique store where "those who are truly seeking can find what they are looking for." The owner of the antique store is Riku, the elder sister, and Bon, the younger brother. This is the beginning of a beautiful and terrifying fantasy story about the interaction between the two, the customers who visit them, and the strange inhabitants of the town.
In a deserted alley travelled by few, is an antique shop. It has no sign, no name. It sells the usual items, but if you believe the rumors, this particular shop also sells undisclosed wish-granting items - for a price, of course. And buyers who fail to follow an item's directions for use will pay an especially high price.
At a mysterious antique shop that appears only on rainy days, Sou finds the keepsake of his grandfather that he supposedly lost a long time ago. He asks the owner, Tsukiji, who has a different air about him, to hand it over to him, but it's not money that this shop accepts as payment. With a fearless smile, the condition that Tsukiji put forth is "Please give birth to my child" – ?!
I'm a merchant that likes to collect evil things. Everything that belongs to the dead is worth having! Embroidered shoes that can walk on their own? I want them! Blue and white porcelain set made from human ashes? I want it! A straw cutter used to cut people in half? I want it! If placed in the hands of ordinary people, these items will haunt them and ruin their lives.But, if placed in my hands, they can bring infinite wealth, change fate, and satisfy one's every desire! Do you want to know the reason? Then, come and listen to this story of mine. That is, if you’re courageous enough…
Nanami, a cheerful girl who loves antiques, moved to her grandfather's city where he has an antique store called "Sepia Gate". One day in that store, Nanami broke a jar of very old Chinese. Then what appear inside that jar? Follow the adventure of Nanami and friends from "Sepia Gate" in reviving the abandoned spirit of antiques things.