Kitsune Musume no Ecchi na Oyado - Season 1

A human man rescued a fox that had been ensnared in a trap and was near death. In gratitude, the fox prayed to be able to repay its savior, resulting in its transformation into a fox girl. Upon seeking out the man, she discovered he was now himself on the verge of dying. To grant his final wish, she takes on the role of proprietress at his abandoned hot spring inn.