Grandpa Mojito had just moved to a small village, where he intended to open a shop selling books and trinkets related to the supernatural. The shop is called KOWAIYA. Grandpa Mojito also has the ability to see ghosts, he is accompanied by his ghost assistant in managing the shop, named Bison. Before the shop is open, Bison and Grandpa Mojito are already in trouble, as they have to deal with an evil baby fairy. (Source: mizanmu.id, translated)