Ano Yama Koete

Kimiko, a young city-girl wife of a company man, Susumu, was surprised when her husband declared that he wanted to quit his job. He was from a farming family, and he wanted to return to the country and his family's trade. Kimiko and Susumu moved back to his hometown, and he began a life that was much more fulfilling for him. Kimiko began working as a teacher at a local elementary school. She's going to have a hard time becoming accustomed to the new community in which she now lives, but they have each other, though, and they can still build a happy, loving life together!

(Source: MangaHelpers)

Included one-shots:
Volume 5: 5-kaibun no Rusuban
Volume 11: Fuyu no Iro