The Ghost-Face Dog Ser.: The Mysteries of Gus, the Ghost-Face Dog :Vol. 1 - 6.

The titles are ;

Volume1: the venture of Gus the ghost dog

Volume 2: the tales of Gus , the ghost face dog

Volume 3: the chronicle of Gus the ghost face dog

Volume 4the saga of Gus , the ghost face dog

Volume 5 : the mysteries of Gus the ghost face dog,

Volume 6: Gus, the ghost- face dog: the teenage years