One day, a puppy comes to the house of Akari, who had just turned twelve and was trying hard to act strong after her mother suddenly fell ill. She immediately falls in love with the puppy and names it "Socks" after the paws, which looked like they had white socks on. Akari was together with Socks day and night. However, as Akari grows up, her feelings and interests move away from Socks.