Moko, who attends a school in Tokyo, spends her days happily with her best friend, Hikaru. Her daily routine is to stop by the convenience store on her way home from school to eat sweets and chat. One day, she finds out that Hikaru has been shoplifting and blames Hikaru for her sense of justice. swear. However, the next day, Hikaru, who shoplifted her, was caught by the manager of the convenience store, but he put the goods in this bag and blamed him for the crime.
