Yomeiri Nante Kiitenai!

Nari is a half-fox demon, born of a yokai and a human. Having learned to shapeshift and live in human society, Nari comes to the city to find "Chi-chan," the human girl he once promised to marry as a child. However, Nari, bewildered by the unfamiliar city, keeps running into trouble, with his transformation failing or drunks harassing him! The one who saves him from all this is Chihiro, a smart and cheerful young man... Nari ends up staying at Chihiro's place, who gives off a comforting scent, and there, he learns a shocking truth!? (Source: Akita Shoten, translated)