Kazuhito Harumi is a teenage boy with an obsession of books, particularly the ones written by his favorite author, Shinobu Akiyama. One day, Kazuhito is shot dead in a cafe during a robbery after protecting a customer. To his surprise, Kazuhito is later reincarnated as a dachshund dog and was brought to a pet shop. Not being able to read a book after a week, Harumi is later adopted by a mysterious girl named Kirihime Natsuno, which Kazuhito later discovers as the customer he protected during the robbery and the real name of Shinobu Akiyama. While under Kirihime's care, Kazuhito came to know of Kirihime's sadistic side and at the same time her positive traits, as well as being a martial artist. After contacting someone asking for Kazuhito's wallet and address, Kirihime, who along with Kazuhito heads to the latter's former apartment.