The song "Supersonic" by 嵐 (ARASHI) is an energetic and uplifting anthem about breaking through limits and reaching for new heights. The lyrics describe a sense of exhilaration and freedom, likening the experience to flying at supersonic speed. The song talks about the thrill of chasing dreams and the excitement of exploring unknown territories. The lyrics also emphasize the idea of feeling a strong connection with others, igniting sparks of inspiration and hope for the future. Overall, "Supersonic" is a celebration of the joy and empowerment found in pursuing one's passions and embracing the boundless possibilities that lie ahead. It encourages listeners to keep pushing forward and to never stop reaching for the stars.