Girl Friends (ガールフレンズ, Gāru Furenzu) is a yuri manga series by Milk Morinaga. It was serialized by Futabasha in the seinen manga magazine Comic High! between October 2006 and August 2010, and subsequently published as five bound volumes. The manga has been licensed in North America by Seven Seas Entertainment.
The story revolves around the quiet and solitary Mari Kumakura, whose only noticeable quality is her top of the class grades. Enter the cute and friendly Akko Oohashi, whose goal is to get to know Mari and become best friends with her. With Akko's help, Mari becomes more confident and sociable, quickly transforming into one of the more fashionable girls in school. As the story progresses, she becomes good friends with Akko, Sugi and Tamami. The group gets into all kinds of situations: alcohol, boys, diets, fashion, friends and studies. However, as the plot develops, Mari, and later Akko, becomes aware of the deeper feelings she possesses for her best friend, feelings that eclipse friendship. Caught between romance and friendship, the two must come to terms with their love for one another, knowing that by doing so, their relationship, and even their lives, could drastically change forever.