Movie
Description
Emerging from extreme poverty as the son of Ittetsu Hoshi, a Yomiuri Giants third baseman whose career ended from a World War II injury, Hyūma Hoshi faced a harsh childhood after his mother's early death. He and his older sister Akiko endured the care of their bitter, alcoholic father. Ittetsu imposed brutal baseball training from infancy, forcing the naturally right-handed Hyūma to use only his left hand for all activities, aided by a specialized "Dai League Ball Training Cast" to build muscle. This upbringing fostered deep resentment towards baseball and his father.

Hyūma's perspective shifted during junior high confrontations with future rivals Mitsuru Hanagata and Sadaharu Oh, awakening a fierce passion for baseball. Yielding to Ittetsu's pressure, he enrolled at elite Seiun High School, frequented by wealthy students, to form a battery with gifted catcher Chūta Ban. Their initial antagonism evolved into a close friendship, driving the previously weak Seiun team to the 1967 Kōshien National Championship finals. In the semifinals, a broken bat from Hōsaku Samon severely injured Hyūma's pitching hand fingernail. He concealed the wound, throwing "blood-stained" pitches in the finals against Hanagata's Kōyō High School before collapsing, resulting in a runner-up finish.

Post-tournament, Seiun's baseball team faced disbandment due to perceived charity from Kōyō's sponsor, Daizō Ban (Chūta's father). Following Daizō's assault in a shadowy incident, Hyūma was wrongly accused. To protect the real culprit, his friend Makiba, and save the team, Hyūma accepted expulsion from Seiun despite Chūta's initial rejection of his innocence. This sacrifice severed their friendship.

Professionally, Hyūma defied early skepticism from scouts doubting his durability, joining the Yomiuri Giants after passing a grueling entrance test. He reconciled with Chūta during this process, and both joined the team. Manager Tetsuharu Kawakami awarded Hyūma the retired jersey number 16, signifying immense expectations. Though possessing "needle-through-the-hole control," his small physique produced "lightweight pitches" exploited by rivals. This drove him to forge increasingly formidable pitches, culminating in the near-unhittable "Dai League Ball" breaking ball.

Hyūma's career weathered severe challenges, including a career-threatening arm injury depicted in the sequel "Shin Kyojin no Hoshi." His rivalry with Hanagata evolved into mutual respect, especially after Hanagata married Akiko. In spin-offs like the "Special Edition: Fierce Tiger Mitsuru Hanagata" OVA, their dynamic shifted toward collaboration, though Hyūma maintained intense on-field competitiveness. His relationship with Ittetsu remained fraught, marked by confrontations over training methods and professional decisions, yet underscored by their shared, unyielding dedication to baseball excellence.