In the story's first chapter, Miyako is introduced as the main character. On Christmas night, while attempting to catch a purse thief, she stole Hiro's bike. Despite causing damage to his vehicle, they spent the rest of the evening together. Later, at school, they reunited. Unlike many students, Miyako doesn't attend classes often because she finds them uninteresting. She has an energetic personality and enjoys engaging in unusual activities. As time goes on, her feelings for Hiro begin to develop into romantic attraction.