Yukiwarisou

Muromachi period. Main heroine is a daughter of a small rank samurai. She visits autumn festival at Inari Shrine and meets a mysterious person wearing a fox mask. Next day messenger from the left minister arrives and demands protagonists' departure to Kyoto to become left minister's wife and serve the princess. Family decides to accept the favor. But story only begins to unfold around her.

[From vndbreview]