Makoto Kousaka

Heroine, Hiromi Oka, has just entered a high school famous for its tennis club. She has started playing tennis yearning after Madam Butterfly. She was expecting to enjoy playing tennis with her best friend, Maki, but the situation changes when the new coach, Mr. Munakata, suddenly picks out Hiromi to be one of the players for the upcoming tournament and starts giving Hiromi tough lessons. She strives under any circumstance. (myanimelist)

On her first day at Nishi High School, 15-year-old Hiromi Oka is inspired by top player Reika "Ochoufujin" Ryuuzaki to take up tennis. Shortly after joining the school's tennis club, she encounters Jin Munakata, the club's new coach. Munakata puts everyone under rigorous training that even puts Ochoufujin to shame. Despite the hardships, Hiromi's determination prompts the coach to select her as part of the club's main players. (myanimelist)