In general, Hajime no Ippo Rising doesn't fully align with the manga. Some storylines and developments in the manga haven't made it into the anime. This could be due to various factors like production constraints or creative decisions.
The answer is: "OST song" refers to the song in the OST. OST referred to the original music in movies, TV series, and other film and television works, and the song part was the OST song. According to the search results, some OSTs of movies and television works included some songs, such as the theme song of the TV series OST of " A Thought of Passing Mountains," many of Zhou Shen's OST songs, and Yu Kewei's Top Ten Classic OSTs. Therefore, an OST song referred to the song part of the original music in a film or television work.
Definitely! The Hajime no Ippo manga has a compelling plot with lots of exciting boxing matches and emotional character arcs. The way it portrays the sport and the growth of the main character makes it really enjoyable.
Ippo's age in the manga changes as the plot progresses. At the beginning, he's around 16 or 17 years old. As the story continues, he gets older with each new arc.