Sayuki no Sato

Yukiko along with her husband, Hideo, and their son Shuuichi decide to move to an isolated village in the country on the invitation of her sister-in-law Natsumi. Yearning for a quiet life in the country, the Takamine family believe that the rustic Osutane village was that very place they'd been looking for. Though there is little to do, the air is clear, the water is clean, and the people are both kind and nice. For the Takamine's, seeking to leave the hustle and bustle of city life it seems that this is just the perfect place to live and start a whole new life, but one night Yukiko see Natsumi having sex with several strangers thereafter opening her eyes to the startling secrets of Osutane village. (Source: Anilist)