Maruo Eiitirou (E-Chan), a first year honor student, one day decides he's unhappy with the way things are and lacks excerise. He finds a flyer for the Tennis Club and decides check it out. He's instantly captivated by it. With no prior experience and poor physical conditioning, join E-Chan as he embarks on a tennis journey using his smarts, dedication and work ethic.

[Source: One Manga]