Riviere and the Land of Prayer, Vol. 1 (light novel) — Jougi Shiraishi

ONE PERSON'S TRASH... Welcome to the island nation of Cururunelvia, the land of prayer -- a mysterious place where magic has been sealed away! Here, strange objects known as “sancta” possess the power to make prayers come true. A red-haired beauty by the name of Riviere runs a shop that specializes in dealing with dangerous sancta such as fate-changing perfume, a talking vase, a bag of living puffballs, and more. And she isn't alone! With the help of her enthusiastic assistant, MacMillia, and everyone's favorite Wandering Witch, Riviere aims to rehome these arcane antiques while turning a profit!