Kitsune Musume no Ecchi na Oyado

A man once saved a fox caught in a trap in the mountains. The foxed made offers and prayed to God, wishing to repay the man's kindness. Her wish was granted and she became a fox girl, only to find the man on the verge of death. He asked her to keep his hot spring resort running after he's gone. The fox girl decided to work hard and follow her late benefactor's wish, becoming the resort's proprietress. However, the resort is on the verge of being repossessed unless she pays its debt by next week.

With the resort's future on the line, she now has to make more customers one way or another...