Waka-sama no Zasuru Sekai

Umezono Ryouga inherits his late grandfather's Shinto shrine, having nowhere else to go and no relatives left alive to stay with. There, he accidentally summons and unseals a goddess which nearly eats him alive. Fortunately, he is able to get out of it by offering to cook and buy said goddess Waka-sama all the delicious food that the little money he earns from his part-time job can buy. Brimming with curiousity, Waka-sama ventures out into modern Japan with Ryouga, looking for her sister and discovering new foods, sights, spirits, monsters, and gods all the while.