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.
as Eiichiro Maruo (voice)
as Natsu Takasaki (voice)
as Takuma Egawa (voice)
as Himeko Sasami (voice)
as Yukichi Fukasawa (voice)
as Coach Yusaku Miura (voice)
as Kojirou Kageyama (voice)
as Takuya Miyagawa (voice)
as Yuuki Tajima (voice)
as Coach Ryuuhei Aoi (voice)
as Yoshiaki Ide (voice)
as Souji Ike (voice)
as Hiromi Iwasa (voice)
as Nariyuki Koshimizu (voice)
as Magure Mike (voice)
as Yuu Nabae (voice)
as Alex O' Brien (voice)
as Marsha O'Brien (voice)
as Krishna Rames (voice)
as Shimizu Aki (voice)
as Atsushi Taira (voice)
as Kevin Morland (voice)
as Sakuya Takagi (voice)
as Ryou Oobayashi (voice)
as Hiroshi Araya (voice)
as Sanae Maruo (voice)
