In the hopes of pleasing his childhood friend and crush, Chiharu, Arata agreed to help her clean out an old warehouse from her grandfather. But what neither of them knew was that the warehouse contained "tsukumogami" ancient objects imbued with life. When Arata accidentally broke the seal on a box containing an artifact that hungered for vengeance against humanity, Chiharu was kidnapped! Now it is up to Arata and the good, loyal artifacts to rescue Chiharu before it is too late!

(Source: MangaHelpers)