Takemichi moved into a new apartment building with his mother, where he first meets Chifuyu. A seemingly quiet kid who loves cats. Then he meets Keisuke, an eccentric, loud, violent kid...who also loves cats. The three become good friends, a cute little trio who adore cats more than anything and made it their mission to look after all the stray cats in and around their building. However, peace is lost when Keisuke introduces two of his other friends to the trio, Manjirou and Kazutora. AKA: They're all childhood 'friends' that grow up together, jealously, confusion, love and cat loving pursues