High-school student Ikkyuu knows nothing about baseball, but his talents are recognized by the manager of the baseball club, and he takes up this enchanting sport. While his ignorance of the game leads him to make many mistakes, Ikkyuu - who is in fact a descendant of ninja - displays his superhuman abilities and leads the team to the High School Baseball Championships. 
(Source: Nippon Animation)

A film about the Battle of Okinawa during the last days of World War II. 
During the World War II island hopping campaign there was a fierce battle on Okinawa that devastated the population and ravaged the land and left a mark on the populace of the Okinawan people forever. After the war Okinawa was under the control of the United Stated Military. Without any goods and extreme scarcity of Natural resources the Okinawans were in a desperate day to day survival for the basic needs of life. The Okinawans however, despite their dire situation used song and dance to lighten their spirit and make the best of the situation. But with the loss of almost everything of value on island due to constant shelling bombing and fighting between the Japanese and American all the regular sanshin (an Okinawan musical instrument and precursor of the Japanese shamisen) had become very scarce and hard to find. The American were supplying the Okinawans with powdered milk among other items to help keep starvation low. And from those cans of food they would find a way to bring music back to the people again. 
(Source: AniDB)

Based on Hiroshi Kaizuka's manga. 
The last TMS sports-themed anime series ("Star of the Giants" was the first). 
Because of low ratings, the series was pulled off the air before later episodes of the original manga could be adapted.

Ban Banjou is an insolent wild boy who was raised on the rough sea in Tosa, southern Japan. He joined the Tokyo Yomiuri Giants in Japanese pro baseball league such a baseball pitcher noted for the blazing fastball and the worst control. He fights hard battles against his rival batters, developing his incredible pitching magics.

Based on Ooyama Masutatsu's early years.
 
After having survived the war as a Kamikaze pilot, Ken goes on a path to become the strongest martial artist in the world. Fighting bears, bulls and countless other martial arts such as Muay Thai, Tai Chi and many more around the world.

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. Because of this, Hiromi must endure the peer pressure from her seniors to become an ace tennis player. 
(Source: Anime News Network)

Tokyo Animation Film