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.

Akihime is a seemingly normal girl attending junior high school, but she is actually the daughter of Ryokuhouzan's tengu. She lives with her mother in the human world, living a normal human life. However, her childhood friend Shun is constantly trying to convince her to go to the mountains with him, so that they can become tengus together. Despite his continuous urgings, Akihime refuses because she has feelings for her classmate, Takeru-kun.

Machi de Uwasa no Tengu no Ko won the 2009 Shogakukan Manga Award for best shoujo.