In order to prioritize his health and make the most of his limited free time, Eiichirou Maruo - a diligent student with a strategic mindset - decides to join the Southern Tennis Club when he starts college. Though Eiichirou initially approaches tennis as a means of relaxation, he grows to appreciate the sport for its own sake after meeting Natsu Takasaki - a fellow freshman whose ambitions of achieving pro tennis status set her apart from Eiichirou's academically oriented motivations. As the story of Baby Steps unfolds, readers witness Eiichirou's journey towards developing his own unique playing style with the help of his unwavering dedication and hard work - all with the ultimate goal of competing among the greatest players.