Eiichirō Maruo (nicknamed "Ei-chan" for his grades being straight "A") is an honor student, bookworm, and is not interested in anything other than studying. In order to solve his problem of lacking physical strength, he enrolled a tennis school and soon found the fascinating side of tennis. Being a tennis newbie lacking physical strength, he supplement his shortcomings with his excellent observing and analyzing skills.
Taishi Murata
Eiichiro Maruo (voice)
Minako Kotobuki
Natsu Takasaki (voice)
Daisuke Namikawa
Takuma Egawa (voice)
Asami Seto
Himeko Sasami (voice)
Hiro Shimono
Yukichi Fukasawa (voice)
Taiten Kusunoki
Coach Yusaku Miura (voice)
