In The May Issue of Kodansha´s Monthly Shonen Magazine, it has beed revealed that a Second of Noragami is a reality and that it will have the same staff and cast as the first season.
Funimation bringed the First Season to the US and describes the story as this:
Yato may just be a minor god now, but he's determined to make it big and he's got a plan. Unfortunately, things just don't seem to be going his way. He doesn't have a single shrine dedicated to him, his partner has just quit, and now he's got to find a new divine weapon. Just when things look bleak, he meets a girl named Hiyori and changes her life forever.
In the announcement The Manga creators left a Message saying that they did not believe that there it would be a second season, and that they are happy that it is happening. Also that its good that the original staff and cast will return.