Shinpei's character undergoes significant growth and development throughout the series. At the beginning, he is portrayed as a shy and introverted individual, lacking in confidence and social skills. However, as the series progresses, Shinpei becomes more outgoing, courageous, and self-assured. He learns to overcome his insecurities and face challenges head-on, ultimately becoming a more well-rounded and confident person by the end of the series.
