Ashita no Joe 2 (Movie)

Both are sports anime that focus on boxing. Also, the main characters, Joe and Takamura, are quite similar. They are both brash and strong delinquents, with a natural talent for boxing. Both are discovered by an old boxing coach. Both anime show these main characters go from street urchins to great boxers. 

Both are sports anime, which focus a lot on character development. Both feature energetic characters, who gain new experiences and meet new people while practicing their sport, leading to a better understanding of themselves, their talents, and their surroundings.  

Both anime are set in post-WWII Japan and show the hardships of the era. Both anime focus on street urchins, who try to succeed in life through boxing. Both anime have a similar mood and evoke similar feelings. 

Both are sports anime that focus on boxing. They both show a championship match between two great boxers, who put everything they have in the line to get the belt. Both have a similar mood and atmosphere. 

Both are sports anime that focus on boxing. Both anime have many great fights, sometimes with unpredictable outcomes, and also a lot of character development. They provide an in-depth look into the world of boxing, and show the struggles that boxers often have to face. 

Both are about boxing. Hajime no ippo is newer. If you want more boxing try it.