This is one of the best legal destinations for vintage anime. You can watch the English-dubbed version of Hajime no Ippo for free with ads on RetroCrush .
Known for its live and on-demand content, Pluto TV also hosts the series for free streaming. Watch Hajime no Ippo (Dub) Episode 23 for free ...
While primarily a paid service, Crunchyroll often offers a 7-day free trial that allows you to binge the dubbed episodes without ads. This is one of the best legal destinations for vintage anime