An introverted and honest second year junior high school student named Kozuko (voiced by Ayi Kakuma) transferred to a new school. Her personality made it difficult for her to communicate naturally with her new classmates, and the lack of a mobile phone became a major obstacle to communication. In order to help her younger sister take this step smoothly, Lu Zi's older brother Bu bought a popular card game nowadays
An introverted and honest second year junior high school student named Kozuko (voiced by Ayi Kakuma) transferred to a new school. Her personality made it difficult for her to communicate naturally with her new classmates, and the lack of a mobile phone became a major obstacle to communication. In order to help her younger sister take this step smoothly, Lu Zi's older brother Bu bought a popular card game nowadays