Hajime no Ippo: The Fighting! (2002)

Developed by legendary Japanese developer Treasure, Hajime no Ippo is another solid boxing game based on the popular Japanese manga and anime of the same name. Unlike the two Victorious Boxer games, The Fighting was never released outside of Japan.

Watch Hajime No Ippo: The Fighting! - Crunchyroll

Fighting Spirit (TV Series 2000-2014) — The Movie Database (TMDB)

Hajime no Ippo: The Fighting is still the champion of handheld boxing games, by Vidyasaur

Hajime no Ippo: The Fighting! (Anime TV 2000 - 2002)

Hajime no Ippo: Boxer no Kobushi (Fighting Spirit Special) - Statistics

Victorious Boxers: Ippo's Road to Glory - Wikipedia

there's someone in my head — Hajime no Ippo (2000-2002)

Fighting Spirit (TV Series 2000–2002) - IMDb

Hajime no Ippo: The Fighting! for PlayStation 3

Anime Guide, Wiki Ippo