Eiichirou Maruo

Eiichirō Maruo (丸尾 栄一郎, Maruo Eiichirō), also called Ei-chan (エーちゃん) by his friends, is the main protagonist of Baby Steps. He is the son of Kazuya Maruo and Sanae Maruo who later becomes a member of Southern Tennis Club on his mother's suggestion to fulfill his lack of exercise where his current aim is to become a professional tennis player.