Hachiko, a dog who waited at the train station for his owner to return from work everyday. One day, his owner suffered a cerebral hemorrhage at work and never came home. Hachi continued to wait for his return - appearing exactly when the train was due at the station - for the next nine years.

Referenced in The World Ends With You =D. 

AND ITS JUST LIKE SEYMOUR AND FRY >=O

(Source: sakuraba--neku, via thebattricycle)