On a moonlit night, the lonely home-based programmer, Takigawa Makoto, picks up a small puppy. However, the next morning, the puppy has turned into a child...!? Though shocked, when he talks to the child, Luka, who now has animal ears and a tail, was kidnapped and left on the street. Takigawa decides to take Luka in and protect him for a while. Soon after, Luka's father, the handsome but cocky Ookami Shirou, arrives to find him. Just as Takigawa thinks everything is fine, Shirou suddenly pushes him down—!? (Source: Cosmic Shuppan, translated)