Daisuke Tsubaki is a young and talented midfielder in the anime series Giant Killing. Known for his speed and agility on the field, Tsubaki is a key player for East Tokyo United (ETU), a struggling soccer team aiming to climb back to the top of the Japanese league. Despite his initial lack of confidence, Tsubaki's dedication and determination make him a rising star under the guidance of the eccentric coach, Tatsumi Takeshi. His development is central to the team's success, showcasing themes of growth and teamwork throughout the series.