the story takes place in 2030 where androids are built by just one source of energy called the Crystal.<br />In that moment people trust in androids for keeping them safe of criminals and danger.<br />the story is about a young boy named Otani Youko who don't like androids unlucky for him going to meet an android girl.<br />That android is going to confuse him as her older brother and Otani has to get along with her.