Kyojin no Hoshi

The story is about Hyuma Hoshi, a promising young baseball pitcher who dreams of becoming a top star like his father Ittetsu Hoshi in the professional Japanese league. His father was once a 3rd baseman until he was injured in World War II and was forced to retire. The boy would join the ever popular Giants team, and soon he realized the difficulty of managing the high expectations. From the grueling training to battling the rival Mitsuru Hanagata on the Hanshin Tigers, he would have to take out his best pitching magic to step up to the challenge. (Source: Wikipedia)

Revved Up, Japan Opens Camp for Baseball Classic - The New York Times

USED) Doujinshi - Kyojin no Hoshi (ハート2分の巨人の星) / CLAMP

Kyojin no Hoshi (Volume) - Comic Vine

Shin Kyojin no Hoshi (1977) - Filmaffinity

巨人の星 Kyojin No Hoshi Star Of The Giants : Ikki Kajiwara : Free

Kyojin no Hoshi (manga) - Anime News Network

Shin Kyojin no Hoshi II

Shinyaku Kyojin No Hoshi Hanagata (Manga) en VF

Star of the Giants: Box-02 Blu-ray (Episodes 64-126 / 巨人の星

Slotter Up Core 11 Kyojin no Hoshi IV [Japan Import