Volume 1 is the first volume of Today's Cerberus.
Summary[]
As a young boy, Chiaki Mikado had an encounter with an unusual, three-headed puppy, and as a consequence of a bite from that dog, he lost a piece of his soul. Now a teenager, he finds himself unable to enjoy anything, but the three-headed dog is back in human form -- or more accurately forms -- to fix all that!
With his new roommate(s) leading the charge, can Chiaki experience the happiness that has eluded him for so long?