Character voices listed are for the anime releases only. ; : :
Center fielder on the Seishū High School baseball club, in love with Yuri. In junior high, he held the national records for the 100 meter and 200 m races for his age group. His favorite food is
gomokuzushi. He wears the number 8 on his
jersey. ; : (TV movie 1),
Mariko Kurata (TV movie 2),
Narumi Yasuda (TV movie 3) : The
manager of the Seishū High School baseball club and daughter of the baseball coach. There is a growing romance between Yuri and Katsuya. ; : :
Right fielder on the Seishū High School baseball club. In junior high, he was the
prefectural champion in
judo. He wears the number 9. ; : :
Left-handed pitching ace on the Seishū High School baseball club, and was one of the top pitchers in all of Japan in middle school. Lives with his father, a
truck driver. ; : : Star athlete of the Seishū High School track club, who has a crush on Katsuya since Middle School. After transferring to Seishū at the beginning of the school year, she begins pursuing him, much to the annoyance of Yuri. ; : : A childhood friend of Yuri, and ace pitcher at Bunan High School where he has taken his team to victory at
Kōshien. After an unexpected reunion with Yuri, he becomes the romantic rival of Katsuya. ; : : Kentarō's younger brother and a new member of the Seishū High School baseball club, playing
third base. He has a crush on Yukimi. He wears the number 5. ; : Younger sister of the Yamanaka brothers. She tries to mediate the relationship between Yuri and Kentarō, who in turn uses her to interfere with the developing romance between Yuri and Katsuya. ;Coach Nakao : (TV movies),
Kōichi Kitamura (theatrical movie) : The
coach of the Seishū High School baseball club. He is in jeopardy of losing his job for not having won a single game, which he does with the addition of Eiji Kurahashi to the team. He formerly coached Kentarō for a short time when he was younger, and they were neighbours. ;Kazuya Niimi's father : : A former baseball player who helps Eiji join the baseball team after talking to his father, with whom he formed the winning battery at the invitational
Kōshien tournament of 20-odd years prior to the events of the manga. ;Kazuya Niimi's mother : :Appears in the theatrical movie. ;Eiji Kurashashi's father : :Appears in the theatrical movie. ;Yukimi Yasuda's grandmother : :Appears in the theatrical movie.
Sources: ==TV movies==