Warau Kado ni wa Oinari San

Reio Kongoji is an ordinary high school girl you might find anywhere. During her ordinary hobby of an ordinary walk, she wandered by an inari shrine, where she met a pair of sisters with fox ears. They claim to be the guardians of the shrine? It's a wacky gag comedy about a high school girl and two fox-spirits!
(Source: ComicWalker, translated)
Note: Includes 1 extra chapter.