Blau

A talented and solitary dog named Blau, born under a strange fate, meets a lonely girl named Mirai, and they begin walking together...?! A touching story about a girl and a solitary dog!

(Source: Beaglee, machine translated)

Note: The main series ran in Elegance Eve from the October 2006 issue to the March 2009 issue. A new arc titled "Keisatsu Inu: Blau" began in the April 2009 issue. The series last appeared in the magazine's April 2010 issue. Only one tankoubon volume was released in 2008.