From Aerandria Scans:

During the winter break of her first year in high school, Haruno Komugi's childhood friend, Takiji, comes home to their village after pursuing his studies in Tokyo. Konegi, lonely from her mother being in the hospital, and Takiji, who is living away from his family, start spending time again together, just like in the old days. Just like friends, just like lovers, a wonderful diary of youth.