Satu Azushi is not so neglecting with her family, as completely ignored. Left on the mercy of fate, Azushi cannot learn human speech and instead studies the "cat's tongue" and "Language of dogs" domestic animals. When you finally communicate with other children, your speech is atrophy, and your social thanks leaves much to be desired. But on its first day of day care, he meets a dark blonde with the same name that seems quite a safe choice for the first friend. Developing quite significant fixation with Satu Manato, he discovers that his first friend is seriously ill and has twins; Shuuto: After years, two other friends start school and discover that there are also two Satus in his class. Two Satus, who, at first glance, could be easily adopted for twins, but there are '