Maruo Eiichirou is a punctual and earnest boy who has striven for straight "A"s since elementary school. He began going to a tennis school during high school. There, he meets Takasaki Natsu, a beautiful, earnest girl who only has passion for tennis.
Source: ANN
Okada Takayuki
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Maruo Eiichirou has begun his training in America and quickly realizes that he has still a long way to go. Facing his comrades in the daily matches helps him to realize his own weaknesses and his time overseas proves to be extremely valuable for his development, both as a tennis player and as a person.
The series is about five quintuplets, Kabuto, Hinoki, Arashi, Kinoko and Kodama Morino, who have all kinds of adventures together. Each has their own talent and personality.